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Finding the Fourth Proportional to 84,000.75, 125,937.76 and 50,712.90

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Solution

The fourth proportional to 84,000.75, 125,937.76 and 50,712.90 is: 76,031.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,000.75 : 125,937.76 = 50,712.90 : x
  2. Step 2: Convert to fraction form
    84,000.75/125,937.76 = 50,712.90/x
  3. Step 3: Cross multiply
    84,000.75x = 125,937.76 × 50,712.90
  4. Step 4: Simplify right side
    84,000.75x = 6,386,669,029.10
  5. Step 5: Solve for x
    x = 6,386,669,029.10/84,000.75
  6. Step 6: Final answer
    x = 76,031.10

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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.