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Finding the Fourth Proportional to 63,428.69, 87,332.41 and 53,848.73

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Solution

The fourth proportional to 63,428.69, 87,332.41 and 53,848.73 is: 74,142.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,428.69 : 87,332.41 = 53,848.73 : x
  2. Step 2: Convert to fraction form
    63,428.69/87,332.41 = 53,848.73/x
  3. Step 3: Cross multiply
    63,428.69x = 87,332.41 × 53,848.73
  4. Step 4: Simplify right side
    63,428.69x = 4,702,739,366.34
  5. Step 5: Solve for x
    x = 4,702,739,366.34/63,428.69
  6. Step 6: Final answer
    x = 74,142.15

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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.