Home / 56,931.20-78,528.40-34,575.20

Finding the Fourth Proportional to 56,931.20, 78,528.40 and 34,575.20

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Solution

The fourth proportional to 56,931.20, 78,528.40 and 34,575.20 is: 47,691.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,931.20 : 78,528.40 = 34,575.20 : x
  2. Step 2: Convert to fraction form
    56,931.20/78,528.40 = 34,575.20/x
  3. Step 3: Cross multiply
    56,931.20x = 78,528.40 × 34,575.20
  4. Step 4: Simplify right side
    56,931.20x = 2,715,135,135.68
  5. Step 5: Solve for x
    x = 2,715,135,135.68/56,931.20
  6. Step 6: Final answer
    x = 47,691.51

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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.