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Finding the Fourth Proportional to 70,663, 105,750.10 and 43,634.25

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Solution

The fourth proportional to 70,663, 105,750.10 and 43,634.25 is: 65,300.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,663 : 105,750.10 = 43,634.25 : x
  2. Step 2: Convert to fraction form
    70,663/105,750.10 = 43,634.25/x
  3. Step 3: Cross multiply
    70,663x = 105,750.10 × 43,634.25
  4. Step 4: Simplify right side
    70,663x = 4,614,326,300.93
  5. Step 5: Solve for x
    x = 4,614,326,300.93/70,663
  6. Step 6: Final answer
    x = 65,300.46

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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.