Home / 76,890.67-106,031.53-51,397.13

Finding the Fourth Proportional to 76,890.67, 106,031.53 and 51,397.13

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Solution

The fourth proportional to 76,890.67, 106,031.53 and 51,397.13 is: 70,876.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,890.67 : 106,031.53 = 51,397.13 : x
  2. Step 2: Convert to fraction form
    76,890.67/106,031.53 = 51,397.13/x
  3. Step 3: Cross multiply
    76,890.67x = 106,031.53 × 51,397.13
  4. Step 4: Simplify right side
    76,890.67x = 5,449,716,660.83
  5. Step 5: Solve for x
    x = 5,449,716,660.83/76,890.67
  6. Step 6: Final answer
    x = 70,876.18

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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.