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Finding the Fourth Proportional to 79,807.70, 119,711.55 and 64,255.70

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Solution

The fourth proportional to 79,807.70, 119,711.55 and 64,255.70 is: 96,383.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,807.70 : 119,711.55 = 64,255.70 : x
  2. Step 2: Convert to fraction form
    79,807.70/119,711.55 = 64,255.70/x
  3. Step 3: Cross multiply
    79,807.70x = 119,711.55 × 64,255.70
  4. Step 4: Simplify right side
    79,807.70x = 7,692,149,443.34
  5. Step 5: Solve for x
    x = 7,692,149,443.34/79,807.70
  6. Step 6: Final answer
    x = 96,383.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.