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Finding the Fourth Proportional to 74,967.20, 112,436.40 and 22,378.40

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Solution

The fourth proportional to 74,967.20, 112,436.40 and 22,378.40 is: 33,563.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,967.20 : 112,436.40 = 22,378.40 : x
  2. Step 2: Convert to fraction form
    74,967.20/112,436.40 = 22,378.40/x
  3. Step 3: Cross multiply
    74,967.20x = 112,436.40 × 22,378.40
  4. Step 4: Simplify right side
    74,967.20x = 2,516,146,733.76
  5. Step 5: Solve for x
    x = 2,516,146,733.76/74,967.20
  6. Step 6: Final answer
    x = 33,563.30

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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.