Home / 74,178.78-102,377.16-42,349.56

Finding the Fourth Proportional to 74,178.78, 102,377.16 and 42,349.56

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Solution

The fourth proportional to 74,178.78, 102,377.16 and 42,349.56 is: 58,448.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,178.78 : 102,377.16 = 42,349.56 : x
  2. Step 2: Convert to fraction form
    74,178.78/102,377.16 = 42,349.56/x
  3. Step 3: Cross multiply
    74,178.78x = 102,377.16 × 42,349.56
  4. Step 4: Simplify right side
    74,178.78x = 4,335,627,680.05
  5. Step 5: Solve for x
    x = 4,335,627,680.05/74,178.78
  6. Step 6: Final answer
    x = 58,448.36

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1.5x scale

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.