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Finding the Fourth Proportional to 86,594.10, 129,891.15 and 74,930.10

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Solution

The fourth proportional to 86,594.10, 129,891.15 and 74,930.10 is: 112,395.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,594.10 : 129,891.15 = 74,930.10 : x
  2. Step 2: Convert to fraction form
    86,594.10/129,891.15 = 74,930.10/x
  3. Step 3: Cross multiply
    86,594.10x = 129,891.15 × 74,930.10
  4. Step 4: Simplify right side
    86,594.10x = 9,732,756,858.62
  5. Step 5: Solve for x
    x = 9,732,756,858.62/86,594.10
  6. Step 6: Final answer
    x = 112,395.15

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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.