Home / 91,297.45-125,981.24-62,641.78

Finding the Fourth Proportional to 91,297.45, 125,981.24 and 62,641.78

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Solution

The fourth proportional to 91,297.45, 125,981.24 and 62,641.78 is: 86,439.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,297.45 : 125,981.24 = 62,641.78 : x
  2. Step 2: Convert to fraction form
    91,297.45/125,981.24 = 62,641.78/x
  3. Step 3: Cross multiply
    91,297.45x = 125,981.24 × 62,641.78
  4. Step 4: Simplify right side
    91,297.45x = 7,891,688,490.30
  5. Step 5: Solve for x
    x = 7,891,688,490.30/91,297.45
  6. Step 6: Final answer
    x = 86,439.31

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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.