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Finding the Fourth Proportional to 63,672.14, 87,894.48 and 42,980.12

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Solution

The fourth proportional to 63,672.14, 87,894.48 and 42,980.12 is: 59,330.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,672.14 : 87,894.48 = 42,980.12 : x
  2. Step 2: Convert to fraction form
    63,672.14/87,894.48 = 42,980.12/x
  3. Step 3: Cross multiply
    63,672.14x = 87,894.48 × 42,980.12
  4. Step 4: Simplify right side
    63,672.14x = 3,777,715,297.74
  5. Step 5: Solve for x
    x = 3,777,715,297.74/63,672.14
  6. Step 6: Final answer
    x = 59,330.74

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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.