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Finding the Fourth Proportional to 74,654.10, 111,981.15 and 19,250.10

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Solution

The fourth proportional to 74,654.10, 111,981.15 and 19,250.10 is: 28,875.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,654.10 : 111,981.15 = 19,250.10 : x
  2. Step 2: Convert to fraction form
    74,654.10/111,981.15 = 19,250.10/x
  3. Step 3: Cross multiply
    74,654.10x = 111,981.15 × 19,250.10
  4. Step 4: Simplify right side
    74,654.10x = 2,155,648,335.62
  5. Step 5: Solve for x
    x = 2,155,648,335.62/74,654.10
  6. Step 6: Final answer
    x = 28,875.15

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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.