Home / 57,038.52-78,708.78-31,884.60

Finding the Fourth Proportional to 57,038.52, 78,708.78 and 31,884.60

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Solution

The fourth proportional to 57,038.52, 78,708.78 and 31,884.60 is: 43,998.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,038.52 : 78,708.78 = 31,884.60 : x
  2. Step 2: Convert to fraction form
    57,038.52/78,708.78 = 31,884.60/x
  3. Step 3: Cross multiply
    57,038.52x = 78,708.78 × 31,884.60
  4. Step 4: Simplify right side
    57,038.52x = 2,509,597,966.79
  5. Step 5: Solve for x
    x = 2,509,597,966.79/57,038.52
  6. Step 6: Final answer
    x = 43,998.30

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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.