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Finding the Fourth Proportional to 74,910.70, 112,366.05 and 45,313.30

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Solution

The fourth proportional to 74,910.70, 112,366.05 and 45,313.30 is: 67,969.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,910.70 : 112,366.05 = 45,313.30 : x
  2. Step 2: Convert to fraction form
    74,910.70/112,366.05 = 45,313.30/x
  3. Step 3: Cross multiply
    74,910.70x = 112,366.05 × 45,313.30
  4. Step 4: Simplify right side
    74,910.70x = 5,091,676,533.47
  5. Step 5: Solve for x
    x = 5,091,676,533.47/74,910.70
  6. Step 6: Final answer
    x = 67,969.95

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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.