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Finding the Fourth Proportional to 48,003.70, 72,005.55 and 30,486.10

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Solution

The fourth proportional to 48,003.70, 72,005.55 and 30,486.10 is: 45,729.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,003.70 : 72,005.55 = 30,486.10 : x
  2. Step 2: Convert to fraction form
    48,003.70/72,005.55 = 30,486.10/x
  3. Step 3: Cross multiply
    48,003.70x = 72,005.55 × 30,486.10
  4. Step 4: Simplify right side
    48,003.70x = 2,195,168,397.86
  5. Step 5: Solve for x
    x = 2,195,168,397.86/48,003.70
  6. Step 6: Final answer
    x = 45,729.15

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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.