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Finding the Fourth Proportional to 55,850.88, 77,073.12 and 30,700.80

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Solution

The fourth proportional to 55,850.88, 77,073.12 and 30,700.80 is: 42,366.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,850.88 : 77,073.12 = 30,700.80 : x
  2. Step 2: Convert to fraction form
    55,850.88/77,073.12 = 30,700.80/x
  3. Step 3: Cross multiply
    55,850.88x = 77,073.12 × 30,700.80
  4. Step 4: Simplify right side
    55,850.88x = 2,366,206,442.50
  5. Step 5: Solve for x
    x = 2,366,206,442.50/55,850.88
  6. Step 6: Final answer
    x = 42,366.50

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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.