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Finding the Fourth Proportional to 66,366.30, 99,315.55 and 41,418.07

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Solution

The fourth proportional to 66,366.30, 99,315.55 and 41,418.07 is: 61,981.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,366.30 : 99,315.55 = 41,418.07 : x
  2. Step 2: Convert to fraction form
    66,366.30/99,315.55 = 41,418.07/x
  3. Step 3: Cross multiply
    66,366.30x = 99,315.55 × 41,418.07
  4. Step 4: Simplify right side
    66,366.30x = 4,113,458,401.99
  5. Step 5: Solve for x
    x = 4,113,458,401.99/66,366.30
  6. Step 6: Final answer
    x = 61,981.13

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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.