Home / 40,851.60-61,271.40-12,765.12

Finding the Fourth Proportional to 40,851.60, 61,271.40 and 12,765.12

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Solution

The fourth proportional to 40,851.60, 61,271.40 and 12,765.12 is: 19,145.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,851.60 : 61,271.40 = 12,765.12 : x
  2. Step 2: Convert to fraction form
    40,851.60/61,271.40 = 12,765.12/x
  3. Step 3: Cross multiply
    40,851.60x = 61,271.40 × 12,765.12
  4. Step 4: Simplify right side
    40,851.60x = 782,136,773.57
  5. Step 5: Solve for x
    x = 782,136,773.57/40,851.60
  6. Step 6: Final answer
    x = 19,145.81

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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.