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Finding the Fourth Proportional to 50,877.72, 70,210.80 and 28,521.72

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Solution

The fourth proportional to 50,877.72, 70,210.80 and 28,521.72 is: 39,359.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,877.72 : 70,210.80 = 28,521.72 : x
  2. Step 2: Convert to fraction form
    50,877.72/70,210.80 = 28,521.72/x
  3. Step 3: Cross multiply
    50,877.72x = 70,210.80 × 28,521.72
  4. Step 4: Simplify right side
    50,877.72x = 2,002,532,778.58
  5. Step 5: Solve for x
    x = 2,002,532,778.58/50,877.72
  6. Step 6: Final answer
    x = 39,359.72

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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.