Home / 81,490.46-112,454.66-45,682.78

Finding the Fourth Proportional to 81,490.46, 112,454.66 and 45,682.78

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Solution

The fourth proportional to 81,490.46, 112,454.66 and 45,682.78 is: 63,041.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,490.46 : 112,454.66 = 45,682.78 : x
  2. Step 2: Convert to fraction form
    81,490.46/112,454.66 = 45,682.78/x
  3. Step 3: Cross multiply
    81,490.46x = 112,454.66 × 45,682.78
  4. Step 4: Simplify right side
    81,490.46x = 5,137,241,492.75
  5. Step 5: Solve for x
    x = 5,137,241,492.75/81,490.46
  6. Step 6: Final answer
    x = 63,041.02

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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.