Home / 75,121.03-103,690.08-43,311.10

Finding the Fourth Proportional to 75,121.03, 103,690.08 and 43,311.10

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Solution

The fourth proportional to 75,121.03, 103,690.08 and 43,311.10 is: 59,782.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,121.03 : 103,690.08 = 43,311.10 : x
  2. Step 2: Convert to fraction form
    75,121.03/103,690.08 = 43,311.10/x
  3. Step 3: Cross multiply
    75,121.03x = 103,690.08 × 43,311.10
  4. Step 4: Simplify right side
    75,121.03x = 4,490,931,423.89
  5. Step 5: Solve for x
    x = 4,490,931,423.89/75,121.03
  6. Step 6: Final answer
    x = 59,782.61

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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.