Home / 75,120.03-103,688.70-43,310.10

Finding the Fourth Proportional to 75,120.03, 103,688.70 and 43,310.10

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Solution

The fourth proportional to 75,120.03, 103,688.70 and 43,310.10 is: 59,781.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,120.03 : 103,688.70 = 43,310.10 : x
  2. Step 2: Convert to fraction form
    75,120.03/103,688.70 = 43,310.10/x
  3. Step 3: Cross multiply
    75,120.03x = 103,688.70 × 43,310.10
  4. Step 4: Simplify right side
    75,120.03x = 4,490,767,965.87
  5. Step 5: Solve for x
    x = 4,490,767,965.87/75,120.03
  6. Step 6: Final answer
    x = 59,781.23

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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.