Home / 74,705.79-103,091.38-40,713.60

Finding the Fourth Proportional to 74,705.79, 103,091.38 and 40,713.60

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Solution

The fourth proportional to 74,705.79, 103,091.38 and 40,713.60 is: 56,183.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,705.79 : 103,091.38 = 40,713.60 : x
  2. Step 2: Convert to fraction form
    74,705.79/103,091.38 = 40,713.60/x
  3. Step 3: Cross multiply
    74,705.79x = 103,091.38 × 40,713.60
  4. Step 4: Simplify right side
    74,705.79x = 4,197,220,913.69
  5. Step 5: Solve for x
    x = 4,197,220,913.69/74,705.79
  6. Step 6: Final answer
    x = 56,183.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.