Home / 78,004.57-107,646.21-42,194.47

Finding the Fourth Proportional to 78,004.57, 107,646.21 and 42,194.47

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Solution

The fourth proportional to 78,004.57, 107,646.21 and 42,194.47 is: 58,228.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,004.57 : 107,646.21 = 42,194.47 : x
  2. Step 2: Convert to fraction form
    78,004.57/107,646.21 = 42,194.47/x
  3. Step 3: Cross multiply
    78,004.57x = 107,646.21 × 42,194.47
  4. Step 4: Simplify right side
    78,004.57x = 4,542,074,778.46
  5. Step 5: Solve for x
    x = 4,542,074,778.46/78,004.57
  6. Step 6: Final answer
    x = 58,228.32

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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.