Home / 40,737.12-61,114.48-12,656.64

Finding the Fourth Proportional to 40,737.12, 61,114.48 and 12,656.64

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Solution

The fourth proportional to 40,737.12, 61,114.48 and 12,656.64 is: 18,987.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,737.12 : 61,114.48 = 12,656.64 : x
  2. Step 2: Convert to fraction form
    40,737.12/61,114.48 = 12,656.64/x
  3. Step 3: Cross multiply
    40,737.12x = 61,114.48 × 12,656.64
  4. Step 4: Simplify right side
    40,737.12x = 773,503,972.15
  5. Step 5: Solve for x
    x = 773,503,972.15/40,737.12
  6. Step 6: Final answer
    x = 18,987.69

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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.