Home / 81,099,769.20-121,662,921.60-26,496,502.80

Finding the Fourth Proportional to 81,099,769.20, 121,662,921.60 and 26,496,502.80

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Solution

The fourth proportional to 81,099,769.20, 121,662,921.60 and 26,496,502.80 is: 39,749,088.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,099,769.20 : 121,662,921.60 = 26,496,502.80 : x
  2. Step 2: Convert to fraction form
    81,099,769.20/121,662,921.60 = 26,496,502.80/x
  3. Step 3: Cross multiply
    81,099,769.20x = 121,662,921.60 × 26,496,502.80
  4. Step 4: Simplify right side
    81,099,769.20x = 3,223,641,942,830,580.50
  5. Step 5: Solve for x
    x = 3,223,641,942,830,580.50/81,099,769.20
  6. Step 6: Final answer
    x = 39,749,088.99

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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.