Home / 87,807.51-121,174.38-47,521.35

Finding the Fourth Proportional to 87,807.51, 121,174.38 and 47,521.35

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Solution

The fourth proportional to 87,807.51, 121,174.38 and 47,521.35 is: 65,579.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,807.51 : 121,174.38 = 47,521.35 : x
  2. Step 2: Convert to fraction form
    87,807.51/121,174.38 = 47,521.35/x
  3. Step 3: Cross multiply
    87,807.51x = 121,174.38 × 47,521.35
  4. Step 4: Simplify right side
    87,807.51x = 5,758,370,123.01
  5. Step 5: Solve for x
    x = 5,758,370,123.01/87,807.51
  6. Step 6: Final answer
    x = 65,579.47

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1.5x scale

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.