Home / 78,564.42-117,865.08-25,973.90

Finding the Fourth Proportional to 78,564.42, 117,865.08 and 25,973.90

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Solution

The fourth proportional to 78,564.42, 117,865.08 and 25,973.90 is: 38,966.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,564.42 : 117,865.08 = 25,973.90 : x
  2. Step 2: Convert to fraction form
    78,564.42/117,865.08 = 25,973.90/x
  3. Step 3: Cross multiply
    78,564.42x = 117,865.08 × 25,973.90
  4. Step 4: Simplify right side
    78,564.42x = 3,061,415,801.41
  5. Step 5: Solve for x
    x = 3,061,415,801.41/78,564.42
  6. Step 6: Final answer
    x = 38,966.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.