Home / 61,919.40-85,462.38-40,700.64

Finding the Fourth Proportional to 61,919.40, 85,462.38 and 40,700.64

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Solution

The fourth proportional to 61,919.40, 85,462.38 and 40,700.64 is: 56,175.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,919.40 : 85,462.38 = 40,700.64 : x
  2. Step 2: Convert to fraction form
    61,919.40/85,462.38 = 40,700.64/x
  3. Step 3: Cross multiply
    61,919.40x = 85,462.38 × 40,700.64
  4. Step 4: Simplify right side
    61,919.40x = 3,478,373,561.92
  5. Step 5: Solve for x
    x = 3,478,373,561.92/61,919.40
  6. Step 6: Final answer
    x = 56,175.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.