Home / 78,790.20-118,271.70-43,711.80

Finding the Fourth Proportional to 78,790.20, 118,271.70 and 43,711.80

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Solution

The fourth proportional to 78,790.20, 118,271.70 and 43,711.80 is: 65,615.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,790.20 : 118,271.70 = 43,711.80 : x
  2. Step 2: Convert to fraction form
    78,790.20/118,271.70 = 43,711.80/x
  3. Step 3: Cross multiply
    78,790.20x = 118,271.70 × 43,711.80
  4. Step 4: Simplify right side
    78,790.20x = 5,169,868,896.06
  5. Step 5: Solve for x
    x = 5,169,868,896.06/78,790.20
  6. Step 6: Final answer
    x = 65,615.63

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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.