Home / 86,985.12-130,476.99-51,691.04

Finding the Fourth Proportional to 86,985.12, 130,476.99 and 51,691.04

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Solution

The fourth proportional to 86,985.12, 130,476.99 and 51,691.04 is: 77,536.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,985.12 : 130,476.99 = 51,691.04 : x
  2. Step 2: Convert to fraction form
    86,985.12/130,476.99 = 51,691.04/x
  3. Step 3: Cross multiply
    86,985.12x = 130,476.99 × 51,691.04
  4. Step 4: Simplify right side
    86,985.12x = 6,744,491,309.17
  5. Step 5: Solve for x
    x = 6,744,491,309.17/86,985.12
  6. Step 6: Final answer
    x = 77,536.15

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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.