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Finding the Fourth Proportional to 63,121, 87,109.76 and 36,271.93

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Solution

The fourth proportional to 63,121, 87,109.76 and 36,271.93 is: 50,056.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,121 : 87,109.76 = 36,271.93 : x
  2. Step 2: Convert to fraction form
    63,121/87,109.76 = 36,271.93/x
  3. Step 3: Cross multiply
    63,121x = 87,109.76 × 36,271.93
  4. Step 4: Simplify right side
    63,121x = 3,159,639,117.04
  5. Step 5: Solve for x
    x = 3,159,639,117.04/63,121
  6. Step 6: Final answer
    x = 50,056.86

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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.