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Finding the Fourth Proportional to 55,955.57, 77,203.40 and 38,940.71

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Solution

The fourth proportional to 55,955.57, 77,203.40 and 38,940.71 is: 53,727.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,955.57 : 77,203.40 = 38,940.71 : x
  2. Step 2: Convert to fraction form
    55,955.57/77,203.40 = 38,940.71/x
  3. Step 3: Cross multiply
    55,955.57x = 77,203.40 × 38,940.71
  4. Step 4: Simplify right side
    55,955.57x = 3,006,354,629.69
  5. Step 5: Solve for x
    x = 3,006,354,629.69/55,955.57
  6. Step 6: Final answer
    x = 53,727.54

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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.