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Finding the Fourth Proportional to 74,612.20, 111,918.30 and 67,095.40

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Solution

The fourth proportional to 74,612.20, 111,918.30 and 67,095.40 is: 100,643.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,612.20 : 111,918.30 = 67,095.40 : x
  2. Step 2: Convert to fraction form
    74,612.20/111,918.30 = 67,095.40/x
  3. Step 3: Cross multiply
    74,612.20x = 111,918.30 × 67,095.40
  4. Step 4: Simplify right side
    74,612.20x = 7,509,203,105.82
  5. Step 5: Solve for x
    x = 7,509,203,105.82/74,612.20
  6. Step 6: Final answer
    x = 100,643.10

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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.