Home / 57,307.80-85,961.32-31,178.62

Finding the Fourth Proportional to 57,307.80, 85,961.32 and 31,178.62

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Solution

The fourth proportional to 57,307.80, 85,961.32 and 31,178.62 is: 46,767.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,307.80 : 85,961.32 = 31,178.62 : x
  2. Step 2: Convert to fraction form
    57,307.80/85,961.32 = 31,178.62/x
  3. Step 3: Cross multiply
    57,307.80x = 85,961.32 × 31,178.62
  4. Step 4: Simplify right side
    57,307.80x = 2,680,155,330.98
  5. Step 5: Solve for x
    x = 2,680,155,330.98/57,307.80
  6. Step 6: Final answer
    x = 46,767.72

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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.