Home / 74,910.20-112,365.30-45,312.80

Finding the Fourth Proportional to 74,910.20, 112,365.30 and 45,312.80

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Solution

The fourth proportional to 74,910.20, 112,365.30 and 45,312.80 is: 67,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,910.20 : 112,365.30 = 45,312.80 : x
  2. Step 2: Convert to fraction form
    74,910.20/112,365.30 = 45,312.80/x
  3. Step 3: Cross multiply
    74,910.20x = 112,365.30 × 45,312.80
  4. Step 4: Simplify right side
    74,910.20x = 5,091,586,365.84
  5. Step 5: Solve for x
    x = 5,091,586,365.84/74,910.20
  6. Step 6: Final answer
    x = 67,969.20

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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.