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Finding the Fourth Proportional to 63,751.38, 87,980.22 and 35,457

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Solution

The fourth proportional to 63,751.38, 87,980.22 and 35,457 is: 48,932.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,751.38 : 87,980.22 = 35,457 : x
  2. Step 2: Convert to fraction form
    63,751.38/87,980.22 = 35,457/x
  3. Step 3: Cross multiply
    63,751.38x = 87,980.22 × 35,457
  4. Step 4: Simplify right side
    63,751.38x = 3,119,514,660.54
  5. Step 5: Solve for x
    x = 3,119,514,660.54/63,751.38
  6. Step 6: Final answer
    x = 48,932.50

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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.