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Finding the Fourth Proportional to 63,390.48, 87,475.80 and 34,709.64

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Solution

The fourth proportional to 63,390.48, 87,475.80 and 34,709.64 is: 47,897.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,390.48 : 87,475.80 = 34,709.64 : x
  2. Step 2: Convert to fraction form
    63,390.48/87,475.80 = 34,709.64/x
  3. Step 3: Cross multiply
    63,390.48x = 87,475.80 × 34,709.64
  4. Step 4: Simplify right side
    63,390.48x = 3,036,253,526.71
  5. Step 5: Solve for x
    x = 3,036,253,526.71/63,390.48
  6. Step 6: Final answer
    x = 47,897.63

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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.