Home / 83,639.04-115,420.05-45,398.66

Finding the Fourth Proportional to 83,639.04, 115,420.05 and 45,398.66

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Solution

The fourth proportional to 83,639.04, 115,420.05 and 45,398.66 is: 62,649.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,639.04 : 115,420.05 = 45,398.66 : x
  2. Step 2: Convert to fraction form
    83,639.04/115,420.05 = 45,398.66/x
  3. Step 3: Cross multiply
    83,639.04x = 115,420.05 × 45,398.66
  4. Step 4: Simplify right side
    83,639.04x = 5,239,915,551.59
  5. Step 5: Solve for x
    x = 5,239,915,551.59/83,639.04
  6. Step 6: Final answer
    x = 62,649.16

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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.