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Finding the Fourth Proportional to 70,496.48, 105,711.28 and 40,923.36

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Solution

The fourth proportional to 70,496.48, 105,711.28 and 40,923.36 is: 61,365.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,496.48 : 105,711.28 = 40,923.36 : x
  2. Step 2: Convert to fraction form
    70,496.48/105,711.28 = 40,923.36/x
  3. Step 3: Cross multiply
    70,496.48x = 105,711.28 × 40,923.36
  4. Step 4: Simplify right side
    70,496.48x = 4,326,060,767.50
  5. Step 5: Solve for x
    x = 4,326,060,767.50/70,496.48
  6. Step 6: Final answer
    x = 61,365.63

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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.