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Finding the Fourth Proportional to 66,123.58, 91,278.47 and 44,642.42

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Solution

The fourth proportional to 66,123.58, 91,278.47 and 44,642.42 is: 61,625.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,123.58 : 91,278.47 = 44,642.42 : x
  2. Step 2: Convert to fraction form
    66,123.58/91,278.47 = 44,642.42/x
  3. Step 3: Cross multiply
    66,123.58x = 91,278.47 × 44,642.42
  4. Step 4: Simplify right side
    66,123.58x = 4,074,891,115.09
  5. Step 5: Solve for x
    x = 4,074,891,115.09/66,123.58
  6. Step 6: Final answer
    x = 61,625.39

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1.5x scale

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.