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Finding the Fourth Proportional to 79,838.40, 119,680.80 and 62,059.20

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Solution

The fourth proportional to 79,838.40, 119,680.80 and 62,059.20 is: 93,029.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,838.40 : 119,680.80 = 62,059.20 : x
  2. Step 2: Convert to fraction form
    79,838.40/119,680.80 = 62,059.20/x
  3. Step 3: Cross multiply
    79,838.40x = 119,680.80 × 62,059.20
  4. Step 4: Simplify right side
    79,838.40x = 7,427,294,703.36
  5. Step 5: Solve for x
    x = 7,427,294,703.36/79,838.40
  6. Step 6: Final answer
    x = 93,029.10

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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.