Home / 56,428.20-77,871.96-30,932.88

Finding the Fourth Proportional to 56,428.20, 77,871.96 and 30,932.88

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Solution

The fourth proportional to 56,428.20, 77,871.96 and 30,932.88 is: 42,687.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,428.20 : 77,871.96 = 30,932.88 : x
  2. Step 2: Convert to fraction form
    56,428.20/77,871.96 = 30,932.88/x
  3. Step 3: Cross multiply
    56,428.20x = 77,871.96 × 30,932.88
  4. Step 4: Simplify right side
    56,428.20x = 2,408,803,994.04
  5. Step 5: Solve for x
    x = 2,408,803,994.04/56,428.20
  6. Step 6: Final answer
    x = 42,687.95

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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.