Home / 81,029.16-121,502.57-47,306.57

Finding the Fourth Proportional to 81,029.16, 121,502.57 and 47,306.57

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Solution

The fourth proportional to 81,029.16, 121,502.57 and 47,306.57 is: 70,935.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,029.16 : 121,502.57 = 47,306.57 : x
  2. Step 2: Convert to fraction form
    81,029.16/121,502.57 = 47,306.57/x
  3. Step 3: Cross multiply
    81,029.16x = 121,502.57 × 47,306.57
  4. Step 4: Simplify right side
    81,029.16x = 5,747,868,988.84
  5. Step 5: Solve for x
    x = 5,747,868,988.84/81,029.16
  6. Step 6: Final answer
    x = 70,935.81

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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.