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Finding the Fourth Proportional to 55,892.95, 77,131.49 and 30,398.76

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Solution

The fourth proportional to 55,892.95, 77,131.49 and 30,398.76 is: 41,949.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,892.95 : 77,131.49 = 30,398.76 : x
  2. Step 2: Convert to fraction form
    55,892.95/77,131.49 = 30,398.76/x
  3. Step 3: Cross multiply
    55,892.95x = 77,131.49 × 30,398.76
  4. Step 4: Simplify right side
    55,892.95x = 2,344,701,728.95
  5. Step 5: Solve for x
    x = 2,344,701,728.95/55,892.95
  6. Step 6: Final answer
    x = 41,949.87

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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.