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Finding the Fourth Proportional to 63,066, 87,031.68 and 34,772.70

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Solution

The fourth proportional to 63,066, 87,031.68 and 34,772.70 is: 47,986.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,066 : 87,031.68 = 34,772.70 : x
  2. Step 2: Convert to fraction form
    63,066/87,031.68 = 34,772.70/x
  3. Step 3: Cross multiply
    63,066x = 87,031.68 × 34,772.70
  4. Step 4: Simplify right side
    63,066x = 3,026,326,499.14
  5. Step 5: Solve for x
    x = 3,026,326,499.14/63,066
  6. Step 6: Final answer
    x = 47,986.66

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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.