Home / 77,643.20-107,145.60-45,813.44

Finding the Fourth Proportional to 77,643.20, 107,145.60 and 45,813.44

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Solution

The fourth proportional to 77,643.20, 107,145.60 and 45,813.44 is: 63,221.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,643.20 : 107,145.60 = 45,813.44 : x
  2. Step 2: Convert to fraction form
    77,643.20/107,145.60 = 45,813.44/x
  3. Step 3: Cross multiply
    77,643.20x = 107,145.60 × 45,813.44
  4. Step 4: Simplify right side
    77,643.20x = 4,908,708,516.86
  5. Step 5: Solve for x
    x = 4,908,708,516.86/77,643.20
  6. Step 6: Final answer
    x = 63,221.36

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1.5x scale

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.