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Finding the Fourth Proportional to 74,189.76, 102,351.84 and 42,352.32

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Solution

The fourth proportional to 74,189.76, 102,351.84 and 42,352.32 is: 58,429.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,189.76 : 102,351.84 = 42,352.32 : x
  2. Step 2: Convert to fraction form
    74,189.76/102,351.84 = 42,352.32/x
  3. Step 3: Cross multiply
    74,189.76x = 102,351.84 × 42,352.32
  4. Step 4: Simplify right side
    74,189.76x = 4,334,837,880.27
  5. Step 5: Solve for x
    x = 4,334,837,880.27/74,189.76
  6. Step 6: Final answer
    x = 58,429.06

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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.