Home / 91,719.21-126,518.88-57,673.80

Finding the Fourth Proportional to 91,719.21, 126,518.88 and 57,673.80

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Solution

The fourth proportional to 91,719.21, 126,518.88 and 57,673.80 is: 79,556.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,719.21 : 126,518.88 = 57,673.80 : x
  2. Step 2: Convert to fraction form
    91,719.21/126,518.88 = 57,673.80/x
  3. Step 3: Cross multiply
    91,719.21x = 126,518.88 × 57,673.80
  4. Step 4: Simplify right side
    91,719.21x = 7,296,824,581.34
  5. Step 5: Solve for x
    x = 7,296,824,581.34/91,719.21
  6. Step 6: Final answer
    x = 79,556.12

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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.