Home / 80,657.04-120,947.40-28,059.96

Finding the Fourth Proportional to 80,657.04, 120,947.40 and 28,059.96

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Solution

The fourth proportional to 80,657.04, 120,947.40 and 28,059.96 is: 42,076.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,657.04 : 120,947.40 = 28,059.96 : x
  2. Step 2: Convert to fraction form
    80,657.04/120,947.40 = 28,059.96/x
  3. Step 3: Cross multiply
    80,657.04x = 120,947.40 × 28,059.96
  4. Step 4: Simplify right side
    80,657.04x = 3,393,779,206.10
  5. Step 5: Solve for x
    x = 3,393,779,206.10/80,657.04
  6. Step 6: Final answer
    x = 42,076.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.