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Finding the Fourth Proportional to 70,298.65, 105,331.33 and 49,478.41

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Solution

The fourth proportional to 70,298.65, 105,331.33 and 49,478.41 is: 74,135.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,298.65 : 105,331.33 = 49,478.41 : x
  2. Step 2: Convert to fraction form
    70,298.65/105,331.33 = 49,478.41/x
  3. Step 3: Cross multiply
    70,298.65x = 105,331.33 × 49,478.41
  4. Step 4: Simplify right side
    70,298.65x = 5,211,626,731.59
  5. Step 5: Solve for x
    x = 5,211,626,731.59/70,298.65
  6. Step 6: Final answer
    x = 74,135.52

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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.