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Finding the Fourth Proportional to 98,633.40, 147,877.20 and 54,310.20

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Solution

The fourth proportional to 98,633.40, 147,877.20 and 54,310.20 is: 81,425.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,633.40 : 147,877.20 = 54,310.20 : x
  2. Step 2: Convert to fraction form
    98,633.40/147,877.20 = 54,310.20/x
  3. Step 3: Cross multiply
    98,633.40x = 147,877.20 × 54,310.20
  4. Step 4: Simplify right side
    98,633.40x = 8,031,240,307.44
  5. Step 5: Solve for x
    x = 8,031,240,307.44/98,633.40
  6. Step 6: Final answer
    x = 81,425.16

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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.