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Finding the Fourth Proportional to 74,158.40, 111,188.46 and 40,894.40

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Solution

The fourth proportional to 74,158.40, 111,188.46 and 40,894.40 is: 61,314.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,158.40 : 111,188.46 = 40,894.40 : x
  2. Step 2: Convert to fraction form
    74,158.40/111,188.46 = 40,894.40/x
  3. Step 3: Cross multiply
    74,158.40x = 111,188.46 × 40,894.40
  4. Step 4: Simplify right side
    74,158.40x = 4,546,985,358.62
  5. Step 5: Solve for x
    x = 4,546,985,358.62/74,158.40
  6. Step 6: Final answer
    x = 61,314.50

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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.