Home / 57,139.44-78,852.76-31,646.64

Finding the Fourth Proportional to 57,139.44, 78,852.76 and 31,646.64

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Solution

The fourth proportional to 57,139.44, 78,852.76 and 31,646.64 is: 43,672.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,139.44 : 78,852.76 = 31,646.64 : x
  2. Step 2: Convert to fraction form
    57,139.44/78,852.76 = 31,646.64/x
  3. Step 3: Cross multiply
    57,139.44x = 78,852.76 × 31,646.64
  4. Step 4: Simplify right side
    57,139.44x = 2,495,424,908.73
  5. Step 5: Solve for x
    x = 2,495,424,908.73/57,139.44
  6. Step 6: Final answer
    x = 43,672.55

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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.