Home / 66,759.12-100,378.80-61,557.72

Finding the Fourth Proportional to 66,759.12, 100,378.80 and 61,557.72

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Solution

The fourth proportional to 66,759.12, 100,378.80 and 61,557.72 is: 92,557.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,759.12 : 100,378.80 = 61,557.72 : x
  2. Step 2: Convert to fraction form
    66,759.12/100,378.80 = 61,557.72/x
  3. Step 3: Cross multiply
    66,759.12x = 100,378.80 × 61,557.72
  4. Step 4: Simplify right side
    66,759.12x = 6,179,090,064.34
  5. Step 5: Solve for x
    x = 6,179,090,064.34/66,759.12
  6. Step 6: Final answer
    x = 92,557.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.