Home / 40,928.28-61,312.14-21,219.72

Finding the Fourth Proportional to 40,928.28, 61,312.14 and 21,219.72

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Solution

The fourth proportional to 40,928.28, 61,312.14 and 21,219.72 is: 31,787.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,928.28 : 61,312.14 = 21,219.72 : x
  2. Step 2: Convert to fraction form
    40,928.28/61,312.14 = 21,219.72/x
  3. Step 3: Cross multiply
    40,928.28x = 61,312.14 × 21,219.72
  4. Step 4: Simplify right side
    40,928.28x = 1,301,026,443.40
  5. Step 5: Solve for x
    x = 1,301,026,443.40/40,928.28
  6. Step 6: Final answer
    x = 31,787.96

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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.