Home / 74,351.18-111,531.10-21,038.69

Finding the Fourth Proportional to 74,351.18, 111,531.10 and 21,038.69

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Solution

The fourth proportional to 74,351.18, 111,531.10 and 21,038.69 is: 31,559.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,351.18 : 111,531.10 = 21,038.69 : x
  2. Step 2: Convert to fraction form
    74,351.18/111,531.10 = 21,038.69/x
  3. Step 3: Cross multiply
    74,351.18x = 111,531.10 × 21,038.69
  4. Step 4: Simplify right side
    74,351.18x = 2,346,468,133.07
  5. Step 5: Solve for x
    x = 2,346,468,133.07/74,351.18
  6. Step 6: Final answer
    x = 31,559.26

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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.