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Finding the Fourth Proportional to 66,123.63, 91,278.54 and 44,642.47

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Solution

The fourth proportional to 66,123.63, 91,278.54 and 44,642.47 is: 61,625.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,123.63 : 91,278.54 = 44,642.47 : x
  2. Step 2: Convert to fraction form
    66,123.63/91,278.54 = 44,642.47/x
  3. Step 3: Cross multiply
    66,123.63x = 91,278.54 × 44,642.47
  4. Step 4: Simplify right side
    66,123.63x = 4,074,899,483.59
  5. Step 5: Solve for x
    x = 4,074,899,483.59/66,123.63
  6. Step 6: Final answer
    x = 61,625.47

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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.