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Finding the Fourth Proportional to 70,541.40, 105,812.10 and 69,504.60

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Solution

The fourth proportional to 70,541.40, 105,812.10 and 69,504.60 is: 104,256.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,541.40 : 105,812.10 = 69,504.60 : x
  2. Step 2: Convert to fraction form
    70,541.40/105,812.10 = 69,504.60/x
  3. Step 3: Cross multiply
    70,541.40x = 105,812.10 × 69,504.60
  4. Step 4: Simplify right side
    70,541.40x = 7,354,427,685.66
  5. Step 5: Solve for x
    x = 7,354,427,685.66/70,541.40
  6. Step 6: Final answer
    x = 104,256.90

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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.