Home / 75,660.16-104,423.51-57,721.30

Finding the Fourth Proportional to 75,660.16, 104,423.51 and 57,721.30

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Solution

The fourth proportional to 75,660.16, 104,423.51 and 57,721.30 is: 79,664.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,660.16 : 104,423.51 = 57,721.30 : x
  2. Step 2: Convert to fraction form
    75,660.16/104,423.51 = 57,721.30/x
  3. Step 3: Cross multiply
    75,660.16x = 104,423.51 × 57,721.30
  4. Step 4: Simplify right side
    75,660.16x = 6,027,460,747.76
  5. Step 5: Solve for x
    x = 6,027,460,747.76/75,660.16
  6. Step 6: Final answer
    x = 79,664.92

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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.