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Finding the Fourth Proportional to 86,114.70, 129,175.65 and 46,116.90

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Solution

The fourth proportional to 86,114.70, 129,175.65 and 46,116.90 is: 69,177.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,114.70 : 129,175.65 = 46,116.90 : x
  2. Step 2: Convert to fraction form
    86,114.70/129,175.65 = 46,116.90/x
  3. Step 3: Cross multiply
    86,114.70x = 129,175.65 × 46,116.90
  4. Step 4: Simplify right side
    86,114.70x = 5,957,180,533.49
  5. Step 5: Solve for x
    x = 5,957,180,533.49/86,114.70
  6. Step 6: Final answer
    x = 69,177.28

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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.