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Finding the Fourth Proportional to 84,117.11, 125,918.03 and 54,475.97

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Solution

The fourth proportional to 84,117.11, 125,918.03 and 54,475.97 is: 81,547.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,117.11 : 125,918.03 = 54,475.97 : x
  2. Step 2: Convert to fraction form
    84,117.11/125,918.03 = 54,475.97/x
  3. Step 3: Cross multiply
    84,117.11x = 125,918.03 × 54,475.97
  4. Step 4: Simplify right side
    84,117.11x = 6,859,506,331.34
  5. Step 5: Solve for x
    x = 6,859,506,331.34/84,117.11
  6. Step 6: Final answer
    x = 81,547.10

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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.