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Finding the Fourth Proportional to 98,794.60, 148,264.80 and 39,672.70

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Solution

The fourth proportional to 98,794.60, 148,264.80 and 39,672.70 is: 59,538.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,794.60 : 148,264.80 = 39,672.70 : x
  2. Step 2: Convert to fraction form
    98,794.60/148,264.80 = 39,672.70/x
  3. Step 3: Cross multiply
    98,794.60x = 148,264.80 × 39,672.70
  4. Step 4: Simplify right side
    98,794.60x = 5,882,064,930.96
  5. Step 5: Solve for x
    x = 5,882,064,930.96/98,794.60
  6. Step 6: Final answer
    x = 59,538.32

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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.