Home / 86,931.20-130,348.20-40,126.16

Finding the Fourth Proportional to 86,931.20, 130,348.20 and 40,126.16

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Solution

The fourth proportional to 86,931.20, 130,348.20 and 40,126.16 is: 60,166.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,931.20 : 130,348.20 = 40,126.16 : x
  2. Step 2: Convert to fraction form
    86,931.20/130,348.20 = 40,126.16/x
  3. Step 3: Cross multiply
    86,931.20x = 130,348.20 × 40,126.16
  4. Step 4: Simplify right side
    86,931.20x = 5,230,372,728.91
  5. Step 5: Solve for x
    x = 5,230,372,728.91/86,931.20
  6. Step 6: Final answer
    x = 60,166.81

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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.