Home / 80,869.32-121,316.88-34,129.08

Finding the Fourth Proportional to 80,869.32, 121,316.88 and 34,129.08

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Solution

The fourth proportional to 80,869.32, 121,316.88 and 34,129.08 is: 51,199.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,869.32 : 121,316.88 = 34,129.08 : x
  2. Step 2: Convert to fraction form
    80,869.32/121,316.88 = 34,129.08/x
  3. Step 3: Cross multiply
    80,869.32x = 121,316.88 × 34,129.08
  4. Step 4: Simplify right side
    80,869.32x = 4,140,433,502.87
  5. Step 5: Solve for x
    x = 4,140,433,502.87/80,869.32
  6. Step 6: Final answer
    x = 51,199.06

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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.