Home / 56,278.12-77,660.76-31,126

Finding the Fourth Proportional to 56,278.12, 77,660.76 and 31,126

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Solution

The fourth proportional to 56,278.12, 77,660.76 and 31,126 is: 42,952.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,278.12 : 77,660.76 = 31,126 : x
  2. Step 2: Convert to fraction form
    56,278.12/77,660.76 = 31,126/x
  3. Step 3: Cross multiply
    56,278.12x = 77,660.76 × 31,126
  4. Step 4: Simplify right side
    56,278.12x = 2,417,268,815.76
  5. Step 5: Solve for x
    x = 2,417,268,815.76/56,278.12
  6. Step 6: Final answer
    x = 42,952.20

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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.