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Finding the Fourth Proportional to 86,718.95, 130,078.44 and 24,389.45

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Solution

The fourth proportional to 86,718.95, 130,078.44 and 24,389.45 is: 36,584.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,718.95 : 130,078.44 = 24,389.45 : x
  2. Step 2: Convert to fraction form
    86,718.95/130,078.44 = 24,389.45/x
  3. Step 3: Cross multiply
    86,718.95x = 130,078.44 × 24,389.45
  4. Step 4: Simplify right side
    86,718.95x = 3,172,541,608.46
  5. Step 5: Solve for x
    x = 3,172,541,608.46/86,718.95
  6. Step 6: Final answer
    x = 36,584.18

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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.