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Finding the Fourth Proportional to 78,572.48, 117,858.72 and 23,155.52

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Solution

The fourth proportional to 78,572.48, 117,858.72 and 23,155.52 is: 34,733.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,572.48 : 117,858.72 = 23,155.52 : x
  2. Step 2: Convert to fraction form
    78,572.48/117,858.72 = 23,155.52/x
  3. Step 3: Cross multiply
    78,572.48x = 117,858.72 × 23,155.52
  4. Step 4: Simplify right side
    78,572.48x = 2,729,079,948.13
  5. Step 5: Solve for x
    x = 2,729,079,948.13/78,572.48
  6. Step 6: Final answer
    x = 34,733.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.