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Finding the Fourth Proportional to 80,335.89, 120,420.23 and 26,988.28

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Solution

The fourth proportional to 80,335.89, 120,420.23 and 26,988.28 is: 40,454.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,335.89 : 120,420.23 = 26,988.28 : x
  2. Step 2: Convert to fraction form
    80,335.89/120,420.23 = 26,988.28/x
  3. Step 3: Cross multiply
    80,335.89x = 120,420.23 × 26,988.28
  4. Step 4: Simplify right side
    80,335.89x = 3,249,934,448.91
  5. Step 5: Solve for x
    x = 3,249,934,448.91/80,335.89
  6. Step 6: Final answer
    x = 40,454.33

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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.