Home / 72,177.28-107,709.47-63,431.03

Finding the Fourth Proportional to 72,177.28, 107,709.47 and 63,431.03

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Solution

The fourth proportional to 72,177.28, 107,709.47 and 63,431.03 is: 94,657.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,177.28 : 107,709.47 = 63,431.03 : x
  2. Step 2: Convert to fraction form
    72,177.28/107,709.47 = 63,431.03/x
  3. Step 3: Cross multiply
    72,177.28x = 107,709.47 × 63,431.03
  4. Step 4: Simplify right side
    72,177.28x = 6,832,122,622.85
  5. Step 5: Solve for x
    x = 6,832,122,622.85/72,177.28
  6. Step 6: Final answer
    x = 94,657.52

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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.