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Finding the Fourth Proportional to 101,478.63, 140,055.38 and 58,449.75

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Solution

The fourth proportional to 101,478.63, 140,055.38 and 58,449.75 is: 80,669.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,478.63 : 140,055.38 = 58,449.75 : x
  2. Step 2: Convert to fraction form
    101,478.63/140,055.38 = 58,449.75/x
  3. Step 3: Cross multiply
    101,478.63x = 140,055.38 × 58,449.75
  4. Step 4: Simplify right side
    101,478.63x = 8,186,201,654.91
  5. Step 5: Solve for x
    x = 8,186,201,654.91/101,478.63
  6. Step 6: Final answer
    x = 80,669.22

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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.