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Finding the Fourth Proportional to 69,958.32, 96,534.36 and 42,720.72

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Solution

The fourth proportional to 69,958.32, 96,534.36 and 42,720.72 is: 58,949.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,958.32 : 96,534.36 = 42,720.72 : x
  2. Step 2: Convert to fraction form
    69,958.32/96,534.36 = 42,720.72/x
  3. Step 3: Cross multiply
    69,958.32x = 96,534.36 × 42,720.72
  4. Step 4: Simplify right side
    69,958.32x = 4,124,017,363.94
  5. Step 5: Solve for x
    x = 4,124,017,363.94/69,958.32
  6. Step 6: Final answer
    x = 58,949.63

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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.