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Finding the Fourth Proportional to 98,479.74, 147,719.85 and 39,320.22

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Solution

The fourth proportional to 98,479.74, 147,719.85 and 39,320.22 is: 58,980.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,479.74 : 147,719.85 = 39,320.22 : x
  2. Step 2: Convert to fraction form
    98,479.74/147,719.85 = 39,320.22/x
  3. Step 3: Cross multiply
    98,479.74x = 147,719.85 × 39,320.22
  4. Step 4: Simplify right side
    98,479.74x = 5,808,377,000.37
  5. Step 5: Solve for x
    x = 5,808,377,000.37/98,479.74
  6. Step 6: Final answer
    x = 58,980.43

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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.