Home / 86,123.70-118,854.66-47,887.17

Finding the Fourth Proportional to 86,123.70, 118,854.66 and 47,887.17

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Solution

The fourth proportional to 86,123.70, 118,854.66 and 47,887.17 is: 66,086.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,123.70 : 118,854.66 = 47,887.17 : x
  2. Step 2: Convert to fraction form
    86,123.70/118,854.66 = 47,887.17/x
  3. Step 3: Cross multiply
    86,123.70x = 118,854.66 × 47,887.17
  4. Step 4: Simplify right side
    86,123.70x = 5,691,613,308.71
  5. Step 5: Solve for x
    x = 5,691,613,308.71/86,123.70
  6. Step 6: Final answer
    x = 66,086.49

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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.