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Finding the Fourth Proportional to 50,909.70, 70,254.32 and 28,248.20

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Solution

The fourth proportional to 50,909.70, 70,254.32 and 28,248.20 is: 38,981.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,909.70 : 70,254.32 = 28,248.20 : x
  2. Step 2: Convert to fraction form
    50,909.70/70,254.32 = 28,248.20/x
  3. Step 3: Cross multiply
    50,909.70x = 70,254.32 × 28,248.20
  4. Step 4: Simplify right side
    50,909.70x = 1,984,557,853.17
  5. Step 5: Solve for x
    x = 1,984,557,853.17/50,909.70
  6. Step 6: Final answer
    x = 38,981.92

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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.