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Finding the Fourth Proportional to 79,124.40, 118,751.40 and 76,532.40

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Solution

The fourth proportional to 79,124.40, 118,751.40 and 76,532.40 is: 114,861.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,124.40 : 118,751.40 = 76,532.40 : x
  2. Step 2: Convert to fraction form
    79,124.40/118,751.40 = 76,532.40/x
  3. Step 3: Cross multiply
    79,124.40x = 118,751.40 × 76,532.40
  4. Step 4: Simplify right side
    79,124.40x = 9,088,329,645.36
  5. Step 5: Solve for x
    x = 9,088,329,645.36/79,124.40
  6. Step 6: Final answer
    x = 114,861.28

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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.