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Finding the Fourth Proportional to 112,471.70, 168,772.35 and 42,401.30

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Solution

The fourth proportional to 112,471.70, 168,772.35 and 42,401.30 is: 63,626.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,471.70 : 168,772.35 = 42,401.30 : x
  2. Step 2: Convert to fraction form
    112,471.70/168,772.35 = 42,401.30/x
  3. Step 3: Cross multiply
    112,471.70x = 168,772.35 × 42,401.30
  4. Step 4: Simplify right side
    112,471.70x = 7,156,167,044.06
  5. Step 5: Solve for x
    x = 7,156,167,044.06/112,471.70
  6. Step 6: Final answer
    x = 63,626.38

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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.