Home / 57,023.04-78,690.57-31,530.47

Finding the Fourth Proportional to 57,023.04, 78,690.57 and 31,530.47

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Solution

The fourth proportional to 57,023.04, 78,690.57 and 31,530.47 is: 43,511.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,023.04 : 78,690.57 = 31,530.47 : x
  2. Step 2: Convert to fraction form
    57,023.04/78,690.57 = 31,530.47/x
  3. Step 3: Cross multiply
    57,023.04x = 78,690.57 × 31,530.47
  4. Step 4: Simplify right side
    57,023.04x = 2,481,150,986.29
  5. Step 5: Solve for x
    x = 2,481,150,986.29/57,023.04
  6. Step 6: Final answer
    x = 43,511.38

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Half scale
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Double scale
Find fourth proportional to 57,024.04, 78,691.95 and 31,531.47
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.