Home / 78,938.73-108,937.01-43,130.95

Finding the Fourth Proportional to 78,938.73, 108,937.01 and 43,130.95

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Solution

The fourth proportional to 78,938.73, 108,937.01 and 43,130.95 is: 59,521.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,938.73 : 108,937.01 = 43,130.95 : x
  2. Step 2: Convert to fraction form
    78,938.73/108,937.01 = 43,130.95/x
  3. Step 3: Cross multiply
    78,938.73x = 108,937.01 × 43,130.95
  4. Step 4: Simplify right side
    78,938.73x = 4,698,556,731.46
  5. Step 5: Solve for x
    x = 4,698,556,731.46/78,938.73
  6. Step 6: Final answer
    x = 59,521.56

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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.