Home / 83,704.64-115,435.14-56,887.16

Finding the Fourth Proportional to 83,704.64, 115,435.14 and 56,887.16

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Solution

The fourth proportional to 83,704.64, 115,435.14 and 56,887.16 is: 78,451.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,704.64 : 115,435.14 = 56,887.16 : x
  2. Step 2: Convert to fraction form
    83,704.64/115,435.14 = 56,887.16/x
  3. Step 3: Cross multiply
    83,704.64x = 115,435.14 × 56,887.16
  4. Step 4: Simplify right side
    83,704.64x = 6,566,777,278.80
  5. Step 5: Solve for x
    x = 6,566,777,278.80/83,704.64
  6. Step 6: Final answer
    x = 78,451.77

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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.