Home / 74,867.88-111,620.71-66,453.40

Finding the Fourth Proportional to 74,867.88, 111,620.71 and 66,453.40

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Solution

The fourth proportional to 74,867.88, 111,620.71 and 66,453.40 is: 99,075.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,867.88 : 111,620.71 = 66,453.40 : x
  2. Step 2: Convert to fraction form
    74,867.88/111,620.71 = 66,453.40/x
  3. Step 3: Cross multiply
    74,867.88x = 111,620.71 × 66,453.40
  4. Step 4: Simplify right side
    74,867.88x = 7,417,575,689.91
  5. Step 5: Solve for x
    x = 7,417,575,689.91/74,867.88
  6. Step 6: Final answer
    x = 99,075.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.