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Finding the Fourth Proportional to 100,055.58, 138,033.90 and 57,605.10

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Solution

The fourth proportional to 100,055.58, 138,033.90 and 57,605.10 is: 79,470.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,055.58 : 138,033.90 = 57,605.10 : x
  2. Step 2: Convert to fraction form
    100,055.58/138,033.90 = 57,605.10/x
  3. Step 3: Cross multiply
    100,055.58x = 138,033.90 × 57,605.10
  4. Step 4: Simplify right side
    100,055.58x = 7,951,456,612.89
  5. Step 5: Solve for x
    x = 7,951,456,612.89/100,055.58
  6. Step 6: Final answer
    x = 79,470.40

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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.