Home / 74,228.07-111,320.32-20,916.51

Finding the Fourth Proportional to 74,228.07, 111,320.32 and 20,916.51

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Solution

The fourth proportional to 74,228.07, 111,320.32 and 20,916.51 is: 31,368.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,228.07 : 111,320.32 = 20,916.51 : x
  2. Step 2: Convert to fraction form
    74,228.07/111,320.32 = 20,916.51/x
  3. Step 3: Cross multiply
    74,228.07x = 111,320.32 × 20,916.51
  4. Step 4: Simplify right side
    74,228.07x = 2,328,432,586.48
  5. Step 5: Solve for x
    x = 2,328,432,586.48/74,228.07
  6. Step 6: Final answer
    x = 31,368.63

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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.