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Finding the Fourth Proportional to 84,888.62, 127,253.79 and 28,689.43

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Solution

The fourth proportional to 84,888.62, 127,253.79 and 28,689.43 is: 43,007.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,888.62 : 127,253.79 = 28,689.43 : x
  2. Step 2: Convert to fraction form
    84,888.62/127,253.79 = 28,689.43/x
  3. Step 3: Cross multiply
    84,888.62x = 127,253.79 × 28,689.43
  4. Step 4: Simplify right side
    84,888.62x = 3,650,838,700.44
  5. Step 5: Solve for x
    x = 3,650,838,700.44/84,888.62
  6. Step 6: Final answer
    x = 43,007.40

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1.5x scale

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.