Home / 74,785.78-103,178.48-47,943.10

Finding the Fourth Proportional to 74,785.78, 103,178.48 and 47,943.10

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Solution

The fourth proportional to 74,785.78, 103,178.48 and 47,943.10 is: 66,144.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,785.78 : 103,178.48 = 47,943.10 : x
  2. Step 2: Convert to fraction form
    74,785.78/103,178.48 = 47,943.10/x
  3. Step 3: Cross multiply
    74,785.78x = 103,178.48 × 47,943.10
  4. Step 4: Simplify right side
    74,785.78x = 4,946,696,184.49
  5. Step 5: Solve for x
    x = 4,946,696,184.49/74,785.78
  6. Step 6: Final answer
    x = 66,144.88

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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.