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Finding the Fourth Proportional to 57,235.59, 78,945.51 and 40,275.39

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Solution

The fourth proportional to 57,235.59, 78,945.51 and 40,275.39 is: 55,552.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,235.59 : 78,945.51 = 40,275.39 : x
  2. Step 2: Convert to fraction form
    57,235.59/78,945.51 = 40,275.39/x
  3. Step 3: Cross multiply
    57,235.59x = 78,945.51 × 40,275.39
  4. Step 4: Simplify right side
    57,235.59x = 3,179,561,204.00
  5. Step 5: Solve for x
    x = 3,179,561,204.00/57,235.59
  6. Step 6: Final answer
    x = 55,552.17

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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.