Home / 40,977.40-61,475.35-12,516.90

Finding the Fourth Proportional to 40,977.40, 61,475.35 and 12,516.90

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Solution

The fourth proportional to 40,977.40, 61,475.35 and 12,516.90 is: 18,778.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,977.40 : 61,475.35 = 12,516.90 : x
  2. Step 2: Convert to fraction form
    40,977.40/61,475.35 = 12,516.90/x
  3. Step 3: Cross multiply
    40,977.40x = 61,475.35 × 12,516.90
  4. Step 4: Simplify right side
    40,977.40x = 769,480,808.42
  5. Step 5: Solve for x
    x = 769,480,808.42/40,977.40
  6. Step 6: Final answer
    x = 18,778.18

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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.