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Finding the Fourth Proportional to 114,039.42, 157,369.80 and 66,289

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Solution

The fourth proportional to 114,039.42, 157,369.80 and 66,289 is: 91,476.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,039.42 : 157,369.80 = 66,289 : x
  2. Step 2: Convert to fraction form
    114,039.42/157,369.80 = 66,289/x
  3. Step 3: Cross multiply
    114,039.42x = 157,369.80 × 66,289
  4. Step 4: Simplify right side
    114,039.42x = 10,431,886,672.20
  5. Step 5: Solve for x
    x = 10,431,886,672.20/114,039.42
  6. Step 6: Final answer
    x = 91,476.15

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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.