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Finding the Fourth Proportional to 56,151.70, 77,520.88 and 38,949.12

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Solution

The fourth proportional to 56,151.70, 77,520.88 and 38,949.12 is: 53,771.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,151.70 : 77,520.88 = 38,949.12 : x
  2. Step 2: Convert to fraction form
    56,151.70/77,520.88 = 38,949.12/x
  3. Step 3: Cross multiply
    56,151.70x = 77,520.88 × 38,949.12
  4. Step 4: Simplify right side
    56,151.70x = 3,019,370,057.63
  5. Step 5: Solve for x
    x = 3,019,370,057.63/56,151.70
  6. Step 6: Final answer
    x = 53,771.66

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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.