Home / 66,278.79-99,415.42-45,166.07

Finding the Fourth Proportional to 66,278.79, 99,415.42 and 45,166.07

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Solution

The fourth proportional to 66,278.79, 99,415.42 and 45,166.07 is: 67,747.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,278.79 : 99,415.42 = 45,166.07 : x
  2. Step 2: Convert to fraction form
    66,278.79/99,415.42 = 45,166.07/x
  3. Step 3: Cross multiply
    66,278.79x = 99,415.42 × 45,166.07
  4. Step 4: Simplify right side
    66,278.79x = 4,490,203,954.42
  5. Step 5: Solve for x
    x = 4,490,203,954.42/66,278.79
  6. Step 6: Final answer
    x = 67,747.22

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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.