Home / 86,938.10-130,407.15-40,282.10

Finding the Fourth Proportional to 86,938.10, 130,407.15 and 40,282.10

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Solution

The fourth proportional to 86,938.10, 130,407.15 and 40,282.10 is: 60,423.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,938.10 : 130,407.15 = 40,282.10 : x
  2. Step 2: Convert to fraction form
    86,938.10/130,407.15 = 40,282.10/x
  3. Step 3: Cross multiply
    86,938.10x = 130,407.15 × 40,282.10
  4. Step 4: Simplify right side
    86,938.10x = 5,253,073,857.02
  5. Step 5: Solve for x
    x = 5,253,073,857.02/86,938.10
  6. Step 6: Final answer
    x = 60,423.15

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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.