Home / 105,381.87-145,432.31-62,386.04

Finding the Fourth Proportional to 105,381.87, 145,432.31 and 62,386.04

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Solution

The fourth proportional to 105,381.87, 145,432.31 and 62,386.04 is: 86,095.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,381.87 : 145,432.31 = 62,386.04 : x
  2. Step 2: Convert to fraction form
    105,381.87/145,432.31 = 62,386.04/x
  3. Step 3: Cross multiply
    105,381.87x = 145,432.31 × 62,386.04
  4. Step 4: Simplify right side
    105,381.87x = 9,072,944,869.86
  5. Step 5: Solve for x
    x = 9,072,944,869.86/105,381.87
  6. Step 6: Final answer
    x = 86,095.88

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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.