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Finding the Fourth Proportional to 74,809.06, 103,251.87 and 45,742.40

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Solution

The fourth proportional to 74,809.06, 103,251.87 and 45,742.40 is: 63,133.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,809.06 : 103,251.87 = 45,742.40 : x
  2. Step 2: Convert to fraction form
    74,809.06/103,251.87 = 45,742.40/x
  3. Step 3: Cross multiply
    74,809.06x = 103,251.87 × 45,742.40
  4. Step 4: Simplify right side
    74,809.06x = 4,722,987,593.32
  5. Step 5: Solve for x
    x = 4,722,987,593.32/74,809.06
  6. Step 6: Final answer
    x = 63,133.90

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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.