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Finding the Fourth Proportional to 50,920.64, 70,264.72 and 28,253.73

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Solution

The fourth proportional to 50,920.64, 70,264.72 and 28,253.73 is: 38,986.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,920.64 : 70,264.72 = 28,253.73 : x
  2. Step 2: Convert to fraction form
    50,920.64/70,264.72 = 28,253.73/x
  3. Step 3: Cross multiply
    50,920.64x = 70,264.72 × 28,253.73
  4. Step 4: Simplify right side
    50,920.64x = 1,985,240,356.77
  5. Step 5: Solve for x
    x = 1,985,240,356.77/50,920.64
  6. Step 6: Final answer
    x = 38,986.95

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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.