Home / 53,144,781.60-79,713,025.20-20,790,400.80

Finding the Fourth Proportional to 53,144,781.60, 79,713,025.20 and 20,790,400.80

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Solution

The fourth proportional to 53,144,781.60, 79,713,025.20 and 20,790,400.80 is: 31,183,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,144,781.60 : 79,713,025.20 = 20,790,400.80 : x
  2. Step 2: Convert to fraction form
    53,144,781.60/79,713,025.20 = 20,790,400.80/x
  3. Step 3: Cross multiply
    53,144,781.60x = 79,713,025.20 × 20,790,400.80
  4. Step 4: Simplify right side
    53,144,781.60x = 1,657,265,742,888,500.25
  5. Step 5: Solve for x
    x = 1,657,265,742,888,500.25/53,144,781.60
  6. Step 6: Final answer
    x = 31,183,978.80

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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.