Home / 87,128.46-120,223.02-51,313.62

Finding the Fourth Proportional to 87,128.46, 120,223.02 and 51,313.62

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Solution

The fourth proportional to 87,128.46, 120,223.02 and 51,313.62 is: 70,804.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,128.46 : 120,223.02 = 51,313.62 : x
  2. Step 2: Convert to fraction form
    87,128.46/120,223.02 = 51,313.62/x
  3. Step 3: Cross multiply
    87,128.46x = 120,223.02 × 51,313.62
  4. Step 4: Simplify right side
    87,128.46x = 6,169,078,363.53
  5. Step 5: Solve for x
    x = 6,169,078,363.53/87,128.46
  6. Step 6: Final answer
    x = 70,804.40

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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.