Home / 66,631.98-91,943.28-42,790.95

Finding the Fourth Proportional to 66,631.98, 91,943.28 and 42,790.95

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Solution

The fourth proportional to 66,631.98, 91,943.28 and 42,790.95 is: 59,045.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,631.98 : 91,943.28 = 42,790.95 : x
  2. Step 2: Convert to fraction form
    66,631.98/91,943.28 = 42,790.95/x
  3. Step 3: Cross multiply
    66,631.98x = 91,943.28 × 42,790.95
  4. Step 4: Simplify right side
    66,631.98x = 3,934,340,297.32
  5. Step 5: Solve for x
    x = 3,934,340,297.32/66,631.98
  6. Step 6: Final answer
    x = 59,045.83

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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.