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Finding the Fourth Proportional to 70,929.66, 106,394.25 and 21,010.14

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Solution

The fourth proportional to 70,929.66, 106,394.25 and 21,010.14 is: 31,515.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,929.66 : 106,394.25 = 21,010.14 : x
  2. Step 2: Convert to fraction form
    70,929.66/106,394.25 = 21,010.14/x
  3. Step 3: Cross multiply
    70,929.66x = 106,394.25 × 21,010.14
  4. Step 4: Simplify right side
    70,929.66x = 2,235,358,087.70
  5. Step 5: Solve for x
    x = 2,235,358,087.70/70,929.66
  6. Step 6: Final answer
    x = 31,515.14

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1.5x scale

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.