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Finding the Fourth Proportional to 74,574.34, 111,730.29 and 70,134.73

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Solution

The fourth proportional to 74,574.34, 111,730.29 and 70,134.73 is: 105,078.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,574.34 : 111,730.29 = 70,134.73 : x
  2. Step 2: Convert to fraction form
    74,574.34/111,730.29 = 70,134.73/x
  3. Step 3: Cross multiply
    74,574.34x = 111,730.29 × 70,134.73
  4. Step 4: Simplify right side
    74,574.34x = 7,836,173,721.97
  5. Step 5: Solve for x
    x = 7,836,173,721.97/74,574.34
  6. Step 6: Final answer
    x = 105,078.69

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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.