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Finding the Fourth Proportional to 78,769.60, 118,113.60 and 23,358.40

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Solution

The fourth proportional to 78,769.60, 118,113.60 and 23,358.40 is: 35,025.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,769.60 : 118,113.60 = 23,358.40 : x
  2. Step 2: Convert to fraction form
    78,769.60/118,113.60 = 23,358.40/x
  3. Step 3: Cross multiply
    78,769.60x = 118,113.60 × 23,358.40
  4. Step 4: Simplify right side
    78,769.60x = 2,758,944,714.24
  5. Step 5: Solve for x
    x = 2,758,944,714.24/78,769.60
  6. Step 6: Final answer
    x = 35,025.50

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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.