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Finding the Fourth Proportional to 80,595.66, 120,915.36 and 28,008.06

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Solution

The fourth proportional to 80,595.66, 120,915.36 and 28,008.06 is: 42,019.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,595.66 : 120,915.36 = 28,008.06 : x
  2. Step 2: Convert to fraction form
    80,595.66/120,915.36 = 28,008.06/x
  3. Step 3: Cross multiply
    80,595.66x = 120,915.36 × 28,008.06
  4. Step 4: Simplify right side
    80,595.66x = 3,386,604,657.80
  5. Step 5: Solve for x
    x = 3,386,604,657.80/80,595.66
  6. Step 6: Final answer
    x = 42,019.69

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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.