Home / 87,720.66-121,055.23-48,430.90

Finding the Fourth Proportional to 87,720.66, 121,055.23 and 48,430.90

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Solution

The fourth proportional to 87,720.66, 121,055.23 and 48,430.90 is: 66,835.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,720.66 : 121,055.23 = 48,430.90 : x
  2. Step 2: Convert to fraction form
    87,720.66/121,055.23 = 48,430.90/x
  3. Step 3: Cross multiply
    87,720.66x = 121,055.23 × 48,430.90
  4. Step 4: Simplify right side
    87,720.66x = 5,862,812,891.18
  5. Step 5: Solve for x
    x = 5,862,812,891.18/87,720.66
  6. Step 6: Final answer
    x = 66,835.03

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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.