Home / 91,518.09-126,297.60-51,231.61

Finding the Fourth Proportional to 91,518.09, 126,297.60 and 51,231.61

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Solution

The fourth proportional to 91,518.09, 126,297.60 and 51,231.61 is: 70,701.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,518.09 : 126,297.60 = 51,231.61 : x
  2. Step 2: Convert to fraction form
    91,518.09/126,297.60 = 51,231.61/x
  3. Step 3: Cross multiply
    91,518.09x = 126,297.60 × 51,231.61
  4. Step 4: Simplify right side
    91,518.09x = 6,470,429,387.14
  5. Step 5: Solve for x
    x = 6,470,429,387.14/91,518.09
  6. Step 6: Final answer
    x = 70,701.10

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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.