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Finding the Fourth Proportional to 70,059.84, 104,472.80 and 69,428.04

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Solution

The fourth proportional to 70,059.84, 104,472.80 and 69,428.04 is: 103,530.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,059.84 : 104,472.80 = 69,428.04 : x
  2. Step 2: Convert to fraction form
    70,059.84/104,472.80 = 69,428.04/x
  3. Step 3: Cross multiply
    70,059.84x = 104,472.80 × 69,428.04
  4. Step 4: Simplify right side
    70,059.84x = 7,253,341,390.17
  5. Step 5: Solve for x
    x = 7,253,341,390.17/70,059.84
  6. Step 6: Final answer
    x = 103,530.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.