Home / 81,779.85-112,868.15-45,972.81

Finding the Fourth Proportional to 81,779.85, 112,868.15 and 45,972.81

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Solution

The fourth proportional to 81,779.85, 112,868.15 and 45,972.81 is: 63,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,779.85 : 112,868.15 = 45,972.81 : x
  2. Step 2: Convert to fraction form
    81,779.85/112,868.15 = 45,972.81/x
  3. Step 3: Cross multiply
    81,779.85x = 112,868.15 × 45,972.81
  4. Step 4: Simplify right side
    81,779.85x = 5,188,865,785.14
  5. Step 5: Solve for x
    x = 5,188,865,785.14/81,779.85
  6. Step 6: Final answer
    x = 63,449.20

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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.