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Finding the Fourth Proportional to 86,156.92, 129,248.34 and 26,984.80

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Solution

The fourth proportional to 86,156.92, 129,248.34 and 26,984.80 is: 40,481.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,156.92 : 129,248.34 = 26,984.80 : x
  2. Step 2: Convert to fraction form
    86,156.92/129,248.34 = 26,984.80/x
  3. Step 3: Cross multiply
    86,156.92x = 129,248.34 × 26,984.80
  4. Step 4: Simplify right side
    86,156.92x = 3,487,740,605.23
  5. Step 5: Solve for x
    x = 3,487,740,605.23/86,156.92
  6. Step 6: Final answer
    x = 40,481.26

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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.