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Finding the Fourth Proportional to 70,693.80, 105,962.94 and 29,118.12

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Solution

The fourth proportional to 70,693.80, 105,962.94 and 29,118.12 is: 43,645.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,693.80 : 105,962.94 = 29,118.12 : x
  2. Step 2: Convert to fraction form
    70,693.80/105,962.94 = 29,118.12/x
  3. Step 3: Cross multiply
    70,693.80x = 105,962.94 × 29,118.12
  4. Step 4: Simplify right side
    70,693.80x = 3,085,441,602.47
  5. Step 5: Solve for x
    x = 3,085,441,602.47/70,693.80
  6. Step 6: Final answer
    x = 43,645.15

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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.