Home / 81,541.53-112,479.53-51,278.85

Finding the Fourth Proportional to 81,541.53, 112,479.53 and 51,278.85

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Solution

The fourth proportional to 81,541.53, 112,479.53 and 51,278.85 is: 70,734.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,541.53 : 112,479.53 = 51,278.85 : x
  2. Step 2: Convert to fraction form
    81,541.53/112,479.53 = 51,278.85/x
  3. Step 3: Cross multiply
    81,541.53x = 112,479.53 × 51,278.85
  4. Step 4: Simplify right side
    81,541.53x = 5,767,820,690.55
  5. Step 5: Solve for x
    x = 5,767,820,690.55/81,541.53
  6. Step 6: Final answer
    x = 70,734.76

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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.