Home / 81,278.72-112,158.24-45,465.92

Finding the Fourth Proportional to 81,278.72, 112,158.24 and 45,465.92

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Solution

The fourth proportional to 81,278.72, 112,158.24 and 45,465.92 is: 62,739.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,278.72 : 112,158.24 = 45,465.92 : x
  2. Step 2: Convert to fraction form
    81,278.72/112,158.24 = 45,465.92/x
  3. Step 3: Cross multiply
    81,278.72x = 112,158.24 × 45,465.92
  4. Step 4: Simplify right side
    81,278.72x = 5,099,377,567.18
  5. Step 5: Solve for x
    x = 5,099,377,567.18/81,278.72
  6. Step 6: Final answer
    x = 62,739.39

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1.5x scale

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.