Home / 83,688.72-115,489.16-47,887.52

Finding the Fourth Proportional to 83,688.72, 115,489.16 and 47,887.52

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Solution

The fourth proportional to 83,688.72, 115,489.16 and 47,887.52 is: 66,084.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,688.72 : 115,489.16 = 47,887.52 : x
  2. Step 2: Convert to fraction form
    83,688.72/115,489.16 = 47,887.52/x
  3. Step 3: Cross multiply
    83,688.72x = 115,489.16 × 47,887.52
  4. Step 4: Simplify right side
    83,688.72x = 5,530,489,459.28
  5. Step 5: Solve for x
    x = 5,530,489,459.28/83,688.72
  6. Step 6: Final answer
    x = 66,084.05

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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.