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Finding the Fourth Proportional to 98,674.20, 147,938.40 and 42,468.30

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Solution

The fourth proportional to 98,674.20, 147,938.40 and 42,468.30 is: 63,671.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,674.20 : 147,938.40 = 42,468.30 : x
  2. Step 2: Convert to fraction form
    98,674.20/147,938.40 = 42,468.30/x
  3. Step 3: Cross multiply
    98,674.20x = 147,938.40 × 42,468.30
  4. Step 4: Simplify right side
    98,674.20x = 6,282,692,352.72
  5. Step 5: Solve for x
    x = 6,282,692,352.72/98,674.20
  6. Step 6: Final answer
    x = 63,671.07

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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.