Home / 91,723.72-126,525.08-57,678.30

Finding the Fourth Proportional to 91,723.72, 126,525.08 and 57,678.30

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Solution

The fourth proportional to 91,723.72, 126,525.08 and 57,678.30 is: 79,562.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,723.72 : 126,525.08 = 57,678.30 : x
  2. Step 2: Convert to fraction form
    91,723.72/126,525.08 = 57,678.30/x
  3. Step 3: Cross multiply
    91,723.72x = 126,525.08 × 57,678.30
  4. Step 4: Simplify right side
    91,723.72x = 7,297,751,521.76
  5. Step 5: Solve for x
    x = 7,297,751,521.76/91,723.72
  6. Step 6: Final answer
    x = 79,562.32

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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.