Home / 56,931.84-85,283.37-28,382.76

Finding the Fourth Proportional to 56,931.84, 85,283.37 and 28,382.76

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Solution

The fourth proportional to 56,931.84, 85,283.37 and 28,382.76 is: 42,517.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,931.84 : 85,283.37 = 28,382.76 : x
  2. Step 2: Convert to fraction form
    56,931.84/85,283.37 = 28,382.76/x
  3. Step 3: Cross multiply
    56,931.84x = 85,283.37 × 28,382.76
  4. Step 4: Simplify right side
    56,931.84x = 2,420,577,422.70
  5. Step 5: Solve for x
    x = 2,420,577,422.70/56,931.84
  6. Step 6: Final answer
    x = 42,517.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.