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Finding the Fourth Proportional to 50,920.29, 70,270.04 and 28,259.30

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Solution

The fourth proportional to 50,920.29, 70,270.04 and 28,259.30 is: 38,997.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,920.29 : 70,270.04 = 28,259.30 : x
  2. Step 2: Convert to fraction form
    50,920.29/70,270.04 = 28,259.30/x
  3. Step 3: Cross multiply
    50,920.29x = 70,270.04 × 28,259.30
  4. Step 4: Simplify right side
    50,920.29x = 1,985,781,648.73
  5. Step 5: Solve for x
    x = 1,985,781,648.73/50,920.29
  6. Step 6: Final answer
    x = 38,997.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.