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Finding the Fourth Proportional to 63,390.42, 87,455.97 and 38,230.74

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Solution

The fourth proportional to 63,390.42, 87,455.97 and 38,230.74 is: 52,744.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,390.42 : 87,455.97 = 38,230.74 : x
  2. Step 2: Convert to fraction form
    63,390.42/87,455.97 = 38,230.74/x
  3. Step 3: Cross multiply
    63,390.42x = 87,455.97 × 38,230.74
  4. Step 4: Simplify right side
    63,390.42x = 3,343,506,450.52
  5. Step 5: Solve for x
    x = 3,343,506,450.52/63,390.42
  6. Step 6: Final answer
    x = 52,744.66

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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.