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Finding the Fourth Proportional to 91,363.61, 126,082.71 and 51,079.61

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Solution

The fourth proportional to 91,363.61, 126,082.71 and 51,079.61 is: 70,490.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,363.61 : 126,082.71 = 51,079.61 : x
  2. Step 2: Convert to fraction form
    91,363.61/126,082.71 = 51,079.61/x
  3. Step 3: Cross multiply
    91,363.61x = 126,082.71 × 51,079.61
  4. Step 4: Simplify right side
    91,363.61x = 6,440,255,024.13
  5. Step 5: Solve for x
    x = 6,440,255,024.13/91,363.61
  6. Step 6: Final answer
    x = 70,490.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.