Home / 78,559.26-108,412.47-72,606.30

Finding the Fourth Proportional to 78,559.26, 108,412.47 and 72,606.30

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Solution

The fourth proportional to 78,559.26, 108,412.47 and 72,606.30 is: 100,197.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,559.26 : 108,412.47 = 72,606.30 : x
  2. Step 2: Convert to fraction form
    78,559.26/108,412.47 = 72,606.30/x
  3. Step 3: Cross multiply
    78,559.26x = 108,412.47 × 72,606.30
  4. Step 4: Simplify right side
    78,559.26x = 7,871,428,320.56
  5. Step 5: Solve for x
    x = 7,871,428,320.56/78,559.26
  6. Step 6: Final answer
    x = 100,197.33

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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.