Home / 91,389.06-126,131.18-55,590.30

Finding the Fourth Proportional to 91,389.06, 126,131.18 and 55,590.30

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Solution

The fourth proportional to 91,389.06, 126,131.18 and 55,590.30 is: 76,723.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,389.06 : 126,131.18 = 55,590.30 : x
  2. Step 2: Convert to fraction form
    91,389.06/126,131.18 = 55,590.30/x
  3. Step 3: Cross multiply
    91,389.06x = 126,131.18 × 55,590.30
  4. Step 4: Simplify right side
    91,389.06x = 7,011,669,857.60
  5. Step 5: Solve for x
    x = 7,011,669,857.60/91,389.06
  6. Step 6: Final answer
    x = 76,723.30

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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.