Home / 85,364.20-127,931.10-60,711.40

Finding the Fourth Proportional to 85,364.20, 127,931.10 and 60,711.40

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Solution

The fourth proportional to 85,364.20, 127,931.10 and 60,711.40 is: 90,985.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,364.20 : 127,931.10 = 60,711.40 : x
  2. Step 2: Convert to fraction form
    85,364.20/127,931.10 = 60,711.40/x
  3. Step 3: Cross multiply
    85,364.20x = 127,931.10 × 60,711.40
  4. Step 4: Simplify right side
    85,364.20x = 7,766,876,184.54
  5. Step 5: Solve for x
    x = 7,766,876,184.54/85,364.20
  6. Step 6: Final answer
    x = 90,985.17

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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.