Home / 86,690.26-130,139.10-51,646.42

Finding the Fourth Proportional to 86,690.26, 130,139.10 and 51,646.42

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Solution

The fourth proportional to 86,690.26, 130,139.10 and 51,646.42 is: 77,531.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,690.26 : 130,139.10 = 51,646.42 : x
  2. Step 2: Convert to fraction form
    86,690.26/130,139.10 = 51,646.42/x
  3. Step 3: Cross multiply
    86,690.26x = 130,139.10 × 51,646.42
  4. Step 4: Simplify right side
    86,690.26x = 6,721,218,617.02
  5. Step 5: Solve for x
    x = 6,721,218,617.02/86,690.26
  6. Step 6: Final answer
    x = 77,531.42

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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.