Home / 74,868.88-111,622.20-66,454.40

Finding the Fourth Proportional to 74,868.88, 111,622.20 and 66,454.40

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Solution

The fourth proportional to 74,868.88, 111,622.20 and 66,454.40 is: 99,077.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,868.88 : 111,622.20 = 66,454.40 : x
  2. Step 2: Convert to fraction form
    74,868.88/111,622.20 = 66,454.40/x
  3. Step 3: Cross multiply
    74,868.88x = 111,622.20 × 66,454.40
  4. Step 4: Simplify right side
    74,868.88x = 7,417,786,327.68
  5. Step 5: Solve for x
    x = 7,417,786,327.68/74,868.88
  6. Step 6: Final answer
    x = 99,077.03

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1.5x scale

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.