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Finding the Fourth Proportional to 78,572.56, 108,304.24 and 53,070.92

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Solution

The fourth proportional to 78,572.56, 108,304.24 and 53,070.92 is: 73,152.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,572.56 : 108,304.24 = 53,070.92 : x
  2. Step 2: Convert to fraction form
    78,572.56/108,304.24 = 53,070.92/x
  3. Step 3: Cross multiply
    78,572.56x = 108,304.24 × 53,070.92
  4. Step 4: Simplify right side
    78,572.56x = 5,747,805,656.70
  5. Step 5: Solve for x
    x = 5,747,805,656.70/78,572.56
  6. Step 6: Final answer
    x = 73,152.84

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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.