Home / 83,505.64-115,234.18-45,779.08

Finding the Fourth Proportional to 83,505.64, 115,234.18 and 45,779.08

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Solution

The fourth proportional to 83,505.64, 115,234.18 and 45,779.08 is: 63,173.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,505.64 : 115,234.18 = 45,779.08 : x
  2. Step 2: Convert to fraction form
    83,505.64/115,234.18 = 45,779.08/x
  3. Step 3: Cross multiply
    83,505.64x = 115,234.18 × 45,779.08
  4. Step 4: Simplify right side
    83,505.64x = 5,275,314,744.95
  5. Step 5: Solve for x
    x = 5,275,314,744.95/83,505.64
  6. Step 6: Final answer
    x = 63,173.16

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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.