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Finding the Fourth Proportional to 74,153.68, 102,339.28 and 42,327.28

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Solution

The fourth proportional to 74,153.68, 102,339.28 and 42,327.28 is: 58,415.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,153.68 : 102,339.28 = 42,327.28 : x
  2. Step 2: Convert to fraction form
    74,153.68/102,339.28 = 42,327.28/x
  3. Step 3: Cross multiply
    74,153.68x = 102,339.28 × 42,327.28
  4. Step 4: Simplify right side
    74,153.68x = 4,331,743,359.56
  5. Step 5: Solve for x
    x = 4,331,743,359.56/74,153.68
  6. Step 6: Final answer
    x = 58,415.76

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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.