Home / 79,827.12-119,730.96-20,657.88

Finding the Fourth Proportional to 79,827.12, 119,730.96 and 20,657.88

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Solution

The fourth proportional to 79,827.12, 119,730.96 and 20,657.88 is: 30,984.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,827.12 : 119,730.96 = 20,657.88 : x
  2. Step 2: Convert to fraction form
    79,827.12/119,730.96 = 20,657.88/x
  3. Step 3: Cross multiply
    79,827.12x = 119,730.96 × 20,657.88
  4. Step 4: Simplify right side
    79,827.12x = 2,473,387,803.96
  5. Step 5: Solve for x
    x = 2,473,387,803.96/79,827.12
  6. Step 6: Final answer
    x = 30,984.30

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1.5x scale

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.