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Finding the Fourth Proportional to 72,407.71, 99,925.41 and 40,577.14

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Solution

The fourth proportional to 72,407.71, 99,925.41 and 40,577.14 is: 55,998.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,407.71 : 99,925.41 = 40,577.14 : x
  2. Step 2: Convert to fraction form
    72,407.71/99,925.41 = 40,577.14/x
  3. Step 3: Cross multiply
    72,407.71x = 99,925.41 × 40,577.14
  4. Step 4: Simplify right side
    72,407.71x = 4,054,687,351.13
  5. Step 5: Solve for x
    x = 4,054,687,351.13/72,407.71
  6. Step 6: Final answer
    x = 55,998.01

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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.