Home / 71,032.28-106,565.09-21,112.79

Finding the Fourth Proportional to 71,032.28, 106,565.09 and 21,112.79

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Solution

The fourth proportional to 71,032.28, 106,565.09 and 21,112.79 is: 31,674.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,032.28 : 106,565.09 = 21,112.79 : x
  2. Step 2: Convert to fraction form
    71,032.28/106,565.09 = 21,112.79/x
  3. Step 3: Cross multiply
    71,032.28x = 106,565.09 × 21,112.79
  4. Step 4: Simplify right side
    71,032.28x = 2,249,885,728.11
  5. Step 5: Solve for x
    x = 2,249,885,728.11/71,032.28
  6. Step 6: Final answer
    x = 31,674.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.