Home / 87,789.52-121,035.16-55,946.80

Finding the Fourth Proportional to 87,789.52, 121,035.16 and 55,946.80

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Solution

The fourth proportional to 87,789.52, 121,035.16 and 55,946.80 is: 77,133.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,789.52 : 121,035.16 = 55,946.80 : x
  2. Step 2: Convert to fraction form
    87,789.52/121,035.16 = 55,946.80/x
  3. Step 3: Cross multiply
    87,789.52x = 121,035.16 × 55,946.80
  4. Step 4: Simplify right side
    87,789.52x = 6,771,529,889.49
  5. Step 5: Solve for x
    x = 6,771,529,889.49/87,789.52
  6. Step 6: Final answer
    x = 77,133.69

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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.