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Finding the Fourth Proportional to 40,400.60, 60,603.80 and 12,700.76

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Solution

The fourth proportional to 40,400.60, 60,603.80 and 12,700.76 is: 19,052.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,400.60 : 60,603.80 = 12,700.76 : x
  2. Step 2: Convert to fraction form
    40,400.60/60,603.80 = 12,700.76/x
  3. Step 3: Cross multiply
    40,400.60x = 60,603.80 × 12,700.76
  4. Step 4: Simplify right side
    40,400.60x = 769,714,318.89
  5. Step 5: Solve for x
    x = 769,714,318.89/40,400.60
  6. Step 6: Final answer
    x = 19,052.05

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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.