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Finding the Fourth Proportional to 72,526.66, 100,061.13 and 47,390.74

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Solution

The fourth proportional to 72,526.66, 100,061.13 and 47,390.74 is: 65,382.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,526.66 : 100,061.13 = 47,390.74 : x
  2. Step 2: Convert to fraction form
    72,526.66/100,061.13 = 47,390.74/x
  3. Step 3: Cross multiply
    72,526.66x = 100,061.13 × 47,390.74
  4. Step 4: Simplify right side
    72,526.66x = 4,741,970,995.94
  5. Step 5: Solve for x
    x = 4,741,970,995.94/72,526.66
  6. Step 6: Final answer
    x = 65,382.45

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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.