Home / 86,326.20-129,463.79-38,913.93

Finding the Fourth Proportional to 86,326.20, 129,463.79 and 38,913.93

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Solution

The fourth proportional to 86,326.20, 129,463.79 and 38,913.93 is: 58,359.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,326.20 : 129,463.79 = 38,913.93 : x
  2. Step 2: Convert to fraction form
    86,326.20/129,463.79 = 38,913.93/x
  3. Step 3: Cross multiply
    86,326.20x = 129,463.79 × 38,913.93
  4. Step 4: Simplify right side
    86,326.20x = 5,037,944,667.03
  5. Step 5: Solve for x
    x = 5,037,944,667.03/86,326.20
  6. Step 6: Final answer
    x = 58,359.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.