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Finding the Fourth Proportional to 86,468.08, 129,715.54 and 36,548.40

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Solution

The fourth proportional to 86,468.08, 129,715.54 and 36,548.40 is: 54,828.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,468.08 : 129,715.54 = 36,548.40 : x
  2. Step 2: Convert to fraction form
    86,468.08/129,715.54 = 36,548.40/x
  3. Step 3: Cross multiply
    86,468.08x = 129,715.54 × 36,548.40
  4. Step 4: Simplify right side
    86,468.08x = 4,740,895,442.14
  5. Step 5: Solve for x
    x = 4,740,895,442.14/86,468.08
  6. Step 6: Final answer
    x = 54,828.27

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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.