Home / 66,521.61-91,775.70-51,212.82

Finding the Fourth Proportional to 66,521.61, 91,775.70 and 51,212.82

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Solution

The fourth proportional to 66,521.61, 91,775.70 and 51,212.82 is: 70,655.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,521.61 : 91,775.70 = 51,212.82 : x
  2. Step 2: Convert to fraction form
    66,521.61/91,775.70 = 51,212.82/x
  3. Step 3: Cross multiply
    66,521.61x = 91,775.70 × 51,212.82
  4. Step 4: Simplify right side
    66,521.61x = 4,700,092,404.47
  5. Step 5: Solve for x
    x = 4,700,092,404.47/66,521.61
  6. Step 6: Final answer
    x = 70,655.12

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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.