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Finding the Fourth Proportional to 70,509,478.76, 105,769,076.78 and 29,527,655.16

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Solution

The fourth proportional to 70,509,478.76, 105,769,076.78 and 29,527,655.16 is: 44,293,517.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,509,478.76 : 105,769,076.78 = 29,527,655.16 : x
  2. Step 2: Convert to fraction form
    70,509,478.76/105,769,076.78 = 29,527,655.16/x
  3. Step 3: Cross multiply
    70,509,478.76x = 105,769,076.78 × 29,527,655.16
  4. Step 4: Simplify right side
    70,509,478.76x = 3,123,112,825,751,403
  5. Step 5: Solve for x
    x = 3,123,112,825,751,403/70,509,478.76
  6. Step 6: Final answer
    x = 44,293,517.42

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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.