Home / 87,683.72-121,002.80-47,397.15

Finding the Fourth Proportional to 87,683.72, 121,002.80 and 47,397.15

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Solution

The fourth proportional to 87,683.72, 121,002.80 and 47,397.15 is: 65,407.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,683.72 : 121,002.80 = 47,397.15 : x
  2. Step 2: Convert to fraction form
    87,683.72/121,002.80 = 47,397.15/x
  3. Step 3: Cross multiply
    87,683.72x = 121,002.80 × 47,397.15
  4. Step 4: Simplify right side
    87,683.72x = 5,735,187,625.03
  5. Step 5: Solve for x
    x = 5,735,187,625.03/87,683.72
  6. Step 6: Final answer
    x = 65,407.67

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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.