Home / 89,078.40-122,938.56-51,354

Finding the Fourth Proportional to 89,078.40, 122,938.56 and 51,354

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Solution

The fourth proportional to 89,078.40, 122,938.56 and 51,354 is: 70,874.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,078.40 : 122,938.56 = 51,354 : x
  2. Step 2: Convert to fraction form
    89,078.40/122,938.56 = 51,354/x
  3. Step 3: Cross multiply
    89,078.40x = 122,938.56 × 51,354
  4. Step 4: Simplify right side
    89,078.40x = 6,313,386,810.24
  5. Step 5: Solve for x
    x = 6,313,386,810.24/89,078.40
  6. Step 6: Final answer
    x = 70,874.50

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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.