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Finding the Fourth Proportional to 63,559, 87,400.38 and 55,160.92

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Solution

The fourth proportional to 63,559, 87,400.38 and 55,160.92 is: 75,852.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,559 : 87,400.38 = 55,160.92 : x
  2. Step 2: Convert to fraction form
    63,559/87,400.38 = 55,160.92/x
  3. Step 3: Cross multiply
    63,559x = 87,400.38 × 55,160.92
  4. Step 4: Simplify right side
    63,559x = 4,821,085,369.15
  5. Step 5: Solve for x
    x = 4,821,085,369.15/63,559
  6. Step 6: Final answer
    x = 75,852.13

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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.