Home / 91,721.16-126,580.32-69,019.29

Finding the Fourth Proportional to 91,721.16, 126,580.32 and 69,019.29

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Solution

The fourth proportional to 91,721.16, 126,580.32 and 69,019.29 is: 95,250.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,721.16 : 126,580.32 = 69,019.29 : x
  2. Step 2: Convert to fraction form
    91,721.16/126,580.32 = 69,019.29/x
  3. Step 3: Cross multiply
    91,721.16x = 126,580.32 × 69,019.29
  4. Step 4: Simplify right side
    91,721.16x = 8,736,483,814.37
  5. Step 5: Solve for x
    x = 8,736,483,814.37/91,721.16
  6. Step 6: Final answer
    x = 95,250.47

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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.