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Finding the Fourth Proportional to 48,419.40, 72,774.90 and 42,004.20

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Solution

The fourth proportional to 48,419.40, 72,774.90 and 42,004.20 is: 63,132.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,419.40 : 72,774.90 = 42,004.20 : x
  2. Step 2: Convert to fraction form
    48,419.40/72,774.90 = 42,004.20/x
  3. Step 3: Cross multiply
    48,419.40x = 72,774.90 × 42,004.20
  4. Step 4: Simplify right side
    48,419.40x = 3,056,851,454.58
  5. Step 5: Solve for x
    x = 3,056,851,454.58/48,419.40
  6. Step 6: Final answer
    x = 63,132.78

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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.