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Finding the Fourth Proportional to 50,874.63, 70,210.59 and 28,215.78

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Solution

The fourth proportional to 50,874.63, 70,210.59 and 28,215.78 is: 38,939.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,874.63 : 70,210.59 = 28,215.78 : x
  2. Step 2: Convert to fraction form
    50,874.63/70,210.59 = 28,215.78/x
  3. Step 3: Cross multiply
    50,874.63x = 70,210.59 × 28,215.78
  4. Step 4: Simplify right side
    50,874.63x = 1,981,046,561.11
  5. Step 5: Solve for x
    x = 1,981,046,561.11/50,874.63
  6. Step 6: Final answer
    x = 38,939.77

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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.