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Finding the Fourth Proportional to 80,779.68, 121,150.68 and 30,841.44

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Solution

The fourth proportional to 80,779.68, 121,150.68 and 30,841.44 is: 46,254.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,779.68 : 121,150.68 = 30,841.44 : x
  2. Step 2: Convert to fraction form
    80,779.68/121,150.68 = 30,841.44/x
  3. Step 3: Cross multiply
    80,779.68x = 121,150.68 × 30,841.44
  4. Step 4: Simplify right side
    80,779.68x = 3,736,461,428.18
  5. Step 5: Solve for x
    x = 3,736,461,428.18/80,779.68
  6. Step 6: Final answer
    x = 46,254.97

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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.