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Finding the Fourth Proportional to 74,911.40, 112,367.10 and 67,538.60

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Solution

The fourth proportional to 74,911.40, 112,367.10 and 67,538.60 is: 101,307.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,911.40 : 112,367.10 = 67,538.60 : x
  2. Step 2: Convert to fraction form
    74,911.40/112,367.10 = 67,538.60/x
  3. Step 3: Cross multiply
    74,911.40x = 112,367.10 × 67,538.60
  4. Step 4: Simplify right side
    74,911.40x = 7,589,116,620.06
  5. Step 5: Solve for x
    x = 7,589,116,620.06/74,911.40
  6. Step 6: Final answer
    x = 101,307.90

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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.