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Finding the Fourth Proportional to 86,909.47, 119,935.06 and 47,165.47

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Solution

The fourth proportional to 86,909.47, 119,935.06 and 47,165.47 is: 65,088.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,909.47 : 119,935.06 = 47,165.47 : x
  2. Step 2: Convert to fraction form
    86,909.47/119,935.06 = 47,165.47/x
  3. Step 3: Cross multiply
    86,909.47x = 119,935.06 × 47,165.47
  4. Step 4: Simplify right side
    86,909.47x = 5,656,793,474.38
  5. Step 5: Solve for x
    x = 5,656,793,474.38/86,909.47
  6. Step 6: Final answer
    x = 65,088.34

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1.5x scale

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.