Home / 83,572.10-115,355.82-56,387.69

Finding the Fourth Proportional to 83,572.10, 115,355.82 and 56,387.69

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Solution

The fourth proportional to 83,572.10, 115,355.82 and 56,387.69 is: 77,832.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,572.10 : 115,355.82 = 56,387.69 : x
  2. Step 2: Convert to fraction form
    83,572.10/115,355.82 = 56,387.69/x
  3. Step 3: Cross multiply
    83,572.10x = 115,355.82 × 56,387.69
  4. Step 4: Simplify right side
    83,572.10x = 6,504,648,775.40
  5. Step 5: Solve for x
    x = 6,504,648,775.40/83,572.10
  6. Step 6: Final answer
    x = 77,832.77

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1.5x scale

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.