Home / 79,492.16-109,567.40-77,388.66

Finding the Fourth Proportional to 79,492.16, 109,567.40 and 77,388.66

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Solution

The fourth proportional to 79,492.16, 109,567.40 and 77,388.66 is: 106,668.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,492.16 : 109,567.40 = 77,388.66 : x
  2. Step 2: Convert to fraction form
    79,492.16/109,567.40 = 77,388.66/x
  3. Step 3: Cross multiply
    79,492.16x = 109,567.40 × 77,388.66
  4. Step 4: Simplify right side
    79,492.16x = 8,479,274,265.68
  5. Step 5: Solve for x
    x = 8,479,274,265.68/79,492.16
  6. Step 6: Final answer
    x = 106,668.06

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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.