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Finding the Fourth Proportional to 79,711.40, 110,000.76 and 45,262.50

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Solution

The fourth proportional to 79,711.40, 110,000.76 and 45,262.50 is: 62,461.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,711.40 : 110,000.76 = 45,262.50 : x
  2. Step 2: Convert to fraction form
    79,711.40/110,000.76 = 45,262.50/x
  3. Step 3: Cross multiply
    79,711.40x = 110,000.76 × 45,262.50
  4. Step 4: Simplify right side
    79,711.40x = 4,978,909,399.50
  5. Step 5: Solve for x
    x = 4,978,909,399.50/79,711.40
  6. Step 6: Final answer
    x = 62,461.70

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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.