Home / 74,721.03-103,121.20-42,896.08

Finding the Fourth Proportional to 74,721.03, 103,121.20 and 42,896.08

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Solution

The fourth proportional to 74,721.03, 103,121.20 and 42,896.08 is: 59,200.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,721.03 : 103,121.20 = 42,896.08 : x
  2. Step 2: Convert to fraction form
    74,721.03/103,121.20 = 42,896.08/x
  3. Step 3: Cross multiply
    74,721.03x = 103,121.20 × 42,896.08
  4. Step 4: Simplify right side
    74,721.03x = 4,423,495,244.90
  5. Step 5: Solve for x
    x = 4,423,495,244.90/74,721.03
  6. Step 6: Final answer
    x = 59,200.14

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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.