Home / 87,688.72-121,011.60-51,877.81

Finding the Fourth Proportional to 87,688.72, 121,011.60 and 51,877.81

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Solution

The fourth proportional to 87,688.72, 121,011.60 and 51,877.81 is: 71,592.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,688.72 : 121,011.60 = 51,877.81 : x
  2. Step 2: Convert to fraction form
    87,688.72/121,011.60 = 51,877.81/x
  3. Step 3: Cross multiply
    87,688.72x = 121,011.60 × 51,877.81
  4. Step 4: Simplify right side
    87,688.72x = 6,277,816,792.60
  5. Step 5: Solve for x
    x = 6,277,816,792.60/87,688.72
  6. Step 6: Final answer
    x = 71,592.07

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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.