Home / 85,204.70-127,807.05-53,711.90

Finding the Fourth Proportional to 85,204.70, 127,807.05 and 53,711.90

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Solution

The fourth proportional to 85,204.70, 127,807.05 and 53,711.90 is: 80,567.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,204.70 : 127,807.05 = 53,711.90 : x
  2. Step 2: Convert to fraction form
    85,204.70/127,807.05 = 53,711.90/x
  3. Step 3: Cross multiply
    85,204.70x = 127,807.05 × 53,711.90
  4. Step 4: Simplify right side
    85,204.70x = 6,864,759,488.90
  5. Step 5: Solve for x
    x = 6,864,759,488.90/85,204.70
  6. Step 6: Final answer
    x = 80,567.85

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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.