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Finding the Fourth Proportional to 63,384.58, 87,402.70 and 53,422.79

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Solution

The fourth proportional to 63,384.58, 87,402.70 and 53,422.79 is: 73,666.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,384.58 : 87,402.70 = 53,422.79 : x
  2. Step 2: Convert to fraction form
    63,384.58/87,402.70 = 53,422.79/x
  3. Step 3: Cross multiply
    63,384.58x = 87,402.70 × 53,422.79
  4. Step 4: Simplify right side
    63,384.58x = 4,669,296,172.48
  5. Step 5: Solve for x
    x = 4,669,296,172.48/63,384.58
  6. Step 6: Final answer
    x = 73,666.12

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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.