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Finding the Fourth Proportional to 79,320.96, 109,576.80 and 63,384.48

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Solution

The fourth proportional to 79,320.96, 109,576.80 and 63,384.48 is: 87,561.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,320.96 : 109,576.80 = 63,384.48 : x
  2. Step 2: Convert to fraction form
    79,320.96/109,576.80 = 63,384.48/x
  3. Step 3: Cross multiply
    79,320.96x = 109,576.80 × 63,384.48
  4. Step 4: Simplify right side
    79,320.96x = 6,945,468,488.06
  5. Step 5: Solve for x
    x = 6,945,468,488.06/79,320.96
  6. Step 6: Final answer
    x = 87,561.58

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1.5x scale

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.