Home / 87,968.03-121,396.20-47,681.66

Finding the Fourth Proportional to 87,968.03, 121,396.20 and 47,681.66

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Solution

The fourth proportional to 87,968.03, 121,396.20 and 47,681.66 is: 65,800.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,968.03 : 121,396.20 = 47,681.66 : x
  2. Step 2: Convert to fraction form
    87,968.03/121,396.20 = 47,681.66/x
  3. Step 3: Cross multiply
    87,968.03x = 121,396.20 × 47,681.66
  4. Step 4: Simplify right side
    87,968.03x = 5,788,371,726.71
  5. Step 5: Solve for x
    x = 5,788,371,726.71/87,968.03
  6. Step 6: Final answer
    x = 65,800.86

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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.