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Finding the Fourth Proportional to 98,479.52, 147,728.28 and 39,300.80

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Solution

The fourth proportional to 98,479.52, 147,728.28 and 39,300.80 is: 58,954.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,479.52 : 147,728.28 = 39,300.80 : x
  2. Step 2: Convert to fraction form
    98,479.52/147,728.28 = 39,300.80/x
  3. Step 3: Cross multiply
    98,479.52x = 147,728.28 × 39,300.80
  4. Step 4: Simplify right side
    98,479.52x = 5,805,839,586.62
  5. Step 5: Solve for x
    x = 5,805,839,586.62/98,479.52
  6. Step 6: Final answer
    x = 58,954.79

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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.