Home / 87,721.18-121,055.01-47,434.82

Finding the Fourth Proportional to 87,721.18, 121,055.01 and 47,434.82

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Solution

The fourth proportional to 87,721.18, 121,055.01 and 47,434.82 is: 65,459.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,721.18 : 121,055.01 = 47,434.82 : x
  2. Step 2: Convert to fraction form
    87,721.18/121,055.01 = 47,434.82/x
  3. Step 3: Cross multiply
    87,721.18x = 121,055.01 × 47,434.82
  4. Step 4: Simplify right side
    87,721.18x = 5,742,221,826.29
  5. Step 5: Solve for x
    x = 5,742,221,826.29/87,721.18
  6. Step 6: Final answer
    x = 65,459.93

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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.