Home / 87,807.20-121,174.09-47,521.01

Finding the Fourth Proportional to 87,807.20, 121,174.09 and 47,521.01

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Solution

The fourth proportional to 87,807.20, 121,174.09 and 47,521.01 is: 65,579.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,807.20 : 121,174.09 = 47,521.01 : x
  2. Step 2: Convert to fraction form
    87,807.20/121,174.09 = 47,521.01/x
  3. Step 3: Cross multiply
    87,807.20x = 121,174.09 × 47,521.01
  4. Step 4: Simplify right side
    87,807.20x = 5,758,314,417.96
  5. Step 5: Solve for x
    x = 5,758,314,417.96/87,807.20
  6. Step 6: Final answer
    x = 65,579.07

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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.