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Finding the Fourth Proportional to 86,366.52, 129,564.54 and 39,623.40

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Solution

The fourth proportional to 86,366.52, 129,564.54 and 39,623.40 is: 59,441.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,366.52 : 129,564.54 = 39,623.40 : x
  2. Step 2: Convert to fraction form
    86,366.52/129,564.54 = 39,623.40/x
  3. Step 3: Cross multiply
    86,366.52x = 129,564.54 × 39,623.40
  4. Step 4: Simplify right side
    86,366.52x = 5,133,787,594.24
  5. Step 5: Solve for x
    x = 5,133,787,594.24/86,366.52
  6. Step 6: Final answer
    x = 59,441.87

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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.