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Finding the Fourth Proportional to 75,065.52, 112,598.34 and 18,905.64

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Solution

The fourth proportional to 75,065.52, 112,598.34 and 18,905.64 is: 28,358.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,065.52 : 112,598.34 = 18,905.64 : x
  2. Step 2: Convert to fraction form
    75,065.52/112,598.34 = 18,905.64/x
  3. Step 3: Cross multiply
    75,065.52x = 112,598.34 × 18,905.64
  4. Step 4: Simplify right side
    75,065.52x = 2,128,743,680.64
  5. Step 5: Solve for x
    x = 2,128,743,680.64/75,065.52
  6. Step 6: Final answer
    x = 28,358.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.