Home / 91,215.24-136,711.08-51,805.50

Finding the Fourth Proportional to 91,215.24, 136,711.08 and 51,805.50

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Solution

The fourth proportional to 91,215.24, 136,711.08 and 51,805.50 is: 77,644.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,215.24 : 136,711.08 = 51,805.50 : x
  2. Step 2: Convert to fraction form
    91,215.24/136,711.08 = 51,805.50/x
  3. Step 3: Cross multiply
    91,215.24x = 136,711.08 × 51,805.50
  4. Step 4: Simplify right side
    91,215.24x = 7,082,385,854.94
  5. Step 5: Solve for x
    x = 7,082,385,854.94/91,215.24
  6. Step 6: Final answer
    x = 77,644.76

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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.