Home / 85,577.28-128,357.80-26,397.04

Finding the Fourth Proportional to 85,577.28, 128,357.80 and 26,397.04

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Solution

The fourth proportional to 85,577.28, 128,357.80 and 26,397.04 is: 39,593.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,577.28 : 128,357.80 = 26,397.04 : x
  2. Step 2: Convert to fraction form
    85,577.28/128,357.80 = 26,397.04/x
  3. Step 3: Cross multiply
    85,577.28x = 128,357.80 × 26,397.04
  4. Step 4: Simplify right side
    85,577.28x = 3,388,265,980.91
  5. Step 5: Solve for x
    x = 3,388,265,980.91/85,577.28
  6. Step 6: Final answer
    x = 39,593.06

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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.