Home / 66,422.70-99,634.05-42,803.10

Finding the Fourth Proportional to 66,422.70, 99,634.05 and 42,803.10

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Solution

The fourth proportional to 66,422.70, 99,634.05 and 42,803.10 is: 64,204.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,422.70 : 99,634.05 = 42,803.10 : x
  2. Step 2: Convert to fraction form
    66,422.70/99,634.05 = 42,803.10/x
  3. Step 3: Cross multiply
    66,422.70x = 99,634.05 × 42,803.10
  4. Step 4: Simplify right side
    66,422.70x = 4,264,646,205.56
  5. Step 5: Solve for x
    x = 4,264,646,205.56/66,422.70
  6. Step 6: Final answer
    x = 64,204.65

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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.