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Finding the Fourth Proportional to 86,359.84, 129,479.28 and 44,784.16

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Solution

The fourth proportional to 86,359.84, 129,479.28 and 44,784.16 is: 67,144.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,359.84 : 129,479.28 = 44,784.16 : x
  2. Step 2: Convert to fraction form
    86,359.84/129,479.28 = 44,784.16/x
  3. Step 3: Cross multiply
    86,359.84x = 129,479.28 × 44,784.16
  4. Step 4: Simplify right side
    86,359.84x = 5,798,620,792.20
  5. Step 5: Solve for x
    x = 5,798,620,792.20/86,359.84
  6. Step 6: Final answer
    x = 67,144.88

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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.