Home / 85,287.40-127,931.10-29,876.20

Finding the Fourth Proportional to 85,287.40, 127,931.10 and 29,876.20

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Solution

The fourth proportional to 85,287.40, 127,931.10 and 29,876.20 is: 44,814.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,287.40 : 127,931.10 = 29,876.20 : x
  2. Step 2: Convert to fraction form
    85,287.40/127,931.10 = 29,876.20/x
  3. Step 3: Cross multiply
    85,287.40x = 127,931.10 × 29,876.20
  4. Step 4: Simplify right side
    85,287.40x = 3,822,095,129.82
  5. Step 5: Solve for x
    x = 3,822,095,129.82/85,287.40
  6. Step 6: Final answer
    x = 44,814.30

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1.5x scale

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.