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Finding the Fourth Proportional to 72,501.59, 100,062.18 and 40,672.52

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Solution

The fourth proportional to 72,501.59, 100,062.18 and 40,672.52 is: 56,133.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,501.59 : 100,062.18 = 40,672.52 : x
  2. Step 2: Convert to fraction form
    72,501.59/100,062.18 = 40,672.52/x
  3. Step 3: Cross multiply
    72,501.59x = 100,062.18 × 40,672.52
  4. Step 4: Simplify right side
    72,501.59x = 4,069,781,017.29
  5. Step 5: Solve for x
    x = 4,069,781,017.29/72,501.59
  6. Step 6: Final answer
    x = 56,133.68

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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.