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Finding the Fourth Proportional to 60,491.40, 90,737.10 and 42,995.40

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Solution

The fourth proportional to 60,491.40, 90,737.10 and 42,995.40 is: 64,493.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,491.40 : 90,737.10 = 42,995.40 : x
  2. Step 2: Convert to fraction form
    60,491.40/90,737.10 = 42,995.40/x
  3. Step 3: Cross multiply
    60,491.40x = 90,737.10 × 42,995.40
  4. Step 4: Simplify right side
    60,491.40x = 3,901,277,909.34
  5. Step 5: Solve for x
    x = 3,901,277,909.34/60,491.40
  6. Step 6: Final answer
    x = 64,493.10

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Double scale
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Similar ratio
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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.