Home / 91,724.22-126,525.78-57,678.80

Finding the Fourth Proportional to 91,724.22, 126,525.78 and 57,678.80

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Solution

The fourth proportional to 91,724.22, 126,525.78 and 57,678.80 is: 79,563.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,724.22 : 126,525.78 = 57,678.80 : x
  2. Step 2: Convert to fraction form
    91,724.22/126,525.78 = 57,678.80/x
  3. Step 3: Cross multiply
    91,724.22x = 126,525.78 × 57,678.80
  4. Step 4: Simplify right side
    91,724.22x = 7,297,855,159.46
  5. Step 5: Solve for x
    x = 7,297,855,159.46/91,724.22
  6. Step 6: Final answer
    x = 79,563.01

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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.