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Finding the Fourth Proportional to 86,740.80, 130,111.20 and 24,403.20

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Solution

The fourth proportional to 86,740.80, 130,111.20 and 24,403.20 is: 36,604.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,740.80 : 130,111.20 = 24,403.20 : x
  2. Step 2: Convert to fraction form
    86,740.80/130,111.20 = 24,403.20/x
  3. Step 3: Cross multiply
    86,740.80x = 130,111.20 × 24,403.20
  4. Step 4: Simplify right side
    86,740.80x = 3,175,129,635.84
  5. Step 5: Solve for x
    x = 3,175,129,635.84/86,740.80
  6. Step 6: Final answer
    x = 36,604.80

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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.