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Finding the Fourth Proportional to 69,427, 95,855.34 and 42,977.08

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Solution

The fourth proportional to 69,427, 95,855.34 and 42,977.08 is: 59,336.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,427 : 95,855.34 = 42,977.08 : x
  2. Step 2: Convert to fraction form
    69,427/95,855.34 = 42,977.08/x
  3. Step 3: Cross multiply
    69,427x = 95,855.34 × 42,977.08
  4. Step 4: Simplify right side
    69,427x = 4,119,582,615.61
  5. Step 5: Solve for x
    x = 4,119,582,615.61/69,427
  6. Step 6: Final answer
    x = 59,336.90

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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.