Home / 78,821.60-118,243.20-26,225.60

Finding the Fourth Proportional to 78,821.60, 118,243.20 and 26,225.60

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Solution

The fourth proportional to 78,821.60, 118,243.20 and 26,225.60 is: 39,341.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,821.60 : 118,243.20 = 26,225.60 : x
  2. Step 2: Convert to fraction form
    78,821.60/118,243.20 = 26,225.60/x
  3. Step 3: Cross multiply
    78,821.60x = 118,243.20 × 26,225.60
  4. Step 4: Simplify right side
    78,821.60x = 3,100,998,865.92
  5. Step 5: Solve for x
    x = 3,100,998,865.92/78,821.60
  6. Step 6: Final answer
    x = 39,341.99

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1.5x scale

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.