Home / 72,213.31-99,655.68-40,381.53

Finding the Fourth Proportional to 72,213.31, 99,655.68 and 40,381.53

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Solution

The fourth proportional to 72,213.31, 99,655.68 and 40,381.53 is: 55,727.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,213.31 : 99,655.68 = 40,381.53 : x
  2. Step 2: Convert to fraction form
    72,213.31/99,655.68 = 40,381.53/x
  3. Step 3: Cross multiply
    72,213.31x = 99,655.68 × 40,381.53
  4. Step 4: Simplify right side
    72,213.31x = 4,024,248,831.59
  5. Step 5: Solve for x
    x = 4,024,248,831.59/72,213.31
  6. Step 6: Final answer
    x = 55,727.25

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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.