Home / 85,041.20-127,566.36-25,878.80

Finding the Fourth Proportional to 85,041.20, 127,566.36 and 25,878.80

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Solution

The fourth proportional to 85,041.20, 127,566.36 and 25,878.80 is: 38,819.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,041.20 : 127,566.36 = 25,878.80 : x
  2. Step 2: Convert to fraction form
    85,041.20/127,566.36 = 25,878.80/x
  3. Step 3: Cross multiply
    85,041.20x = 127,566.36 × 25,878.80
  4. Step 4: Simplify right side
    85,041.20x = 3,301,264,317.17
  5. Step 5: Solve for x
    x = 3,301,264,317.17/85,041.20
  6. Step 6: Final answer
    x = 38,819.59

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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.