Home / 70,834.08-106,265.12-20,915.04

Finding the Fourth Proportional to 70,834.08, 106,265.12 and 20,915.04

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Solution

The fourth proportional to 70,834.08, 106,265.12 and 20,915.04 is: 31,376.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,834.08 : 106,265.12 = 20,915.04 : x
  2. Step 2: Convert to fraction form
    70,834.08/106,265.12 = 20,915.04/x
  3. Step 3: Cross multiply
    70,834.08x = 106,265.12 × 20,915.04
  4. Step 4: Simplify right side
    70,834.08x = 2,222,539,235.40
  5. Step 5: Solve for x
    x = 2,222,539,235.40/70,834.08
  6. Step 6: Final answer
    x = 31,376.69

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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.