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Finding the Fourth Proportional to 63,715.78, 87,927.88 and 35,421.47

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Solution

The fourth proportional to 63,715.78, 87,927.88 and 35,421.47 is: 48,881.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,715.78 : 87,927.88 = 35,421.47 : x
  2. Step 2: Convert to fraction form
    63,715.78/87,927.88 = 35,421.47/x
  3. Step 3: Cross multiply
    63,715.78x = 87,927.88 × 35,421.47
  4. Step 4: Simplify right side
    63,715.78x = 3,114,534,631.54
  5. Step 5: Solve for x
    x = 3,114,534,631.54/63,715.78
  6. Step 6: Final answer
    x = 48,881.68

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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.