Home / 81,437,852.96-122,155,704.48-20,027,542.40

Finding the Fourth Proportional to 81,437,852.96, 122,155,704.48 and 20,027,542.40

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Solution

The fourth proportional to 81,437,852.96, 122,155,704.48 and 20,027,542.40 is: 30,041,049.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,437,852.96 : 122,155,704.48 = 20,027,542.40 : x
  2. Step 2: Convert to fraction form
    81,437,852.96/122,155,704.48 = 20,027,542.40/x
  3. Step 3: Cross multiply
    81,437,852.96x = 122,155,704.48 × 20,027,542.40
  4. Step 4: Simplify right side
    81,437,852.96x = 2,446,478,550,875,070
  5. Step 5: Solve for x
    x = 2,446,478,550,875,070/81,437,852.96
  6. Step 6: Final answer
    x = 30,041,049.24

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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.