Home / 77,050.58-105,921.56-66,255.92

Finding the Fourth Proportional to 77,050.58, 105,921.56 and 66,255.92

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Solution

The fourth proportional to 77,050.58, 105,921.56 and 66,255.92 is: 91,082.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,050.58 : 105,921.56 = 66,255.92 : x
  2. Step 2: Convert to fraction form
    77,050.58/105,921.56 = 66,255.92/x
  3. Step 3: Cross multiply
    77,050.58x = 105,921.56 × 66,255.92
  4. Step 4: Simplify right side
    77,050.58x = 7,017,930,405.64
  5. Step 5: Solve for x
    x = 7,017,930,405.64/77,050.58
  6. Step 6: Final answer
    x = 91,082.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.