Home / 79,311.13-109,475.54-70,903.57

Finding the Fourth Proportional to 79,311.13, 109,475.54 and 70,903.57

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Solution

The fourth proportional to 79,311.13, 109,475.54 and 70,903.57 is: 97,870.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,311.13 : 109,475.54 = 70,903.57 : x
  2. Step 2: Convert to fraction form
    79,311.13/109,475.54 = 70,903.57/x
  3. Step 3: Cross multiply
    79,311.13x = 109,475.54 × 70,903.57
  4. Step 4: Simplify right side
    79,311.13x = 7,762,206,613.68
  5. Step 5: Solve for x
    x = 7,762,206,613.68/79,311.13
  6. Step 6: Final answer
    x = 97,870.33

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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.