Home / 81,437,845.96-122,155,693.98-20,027,535.40

Finding the Fourth Proportional to 81,437,845.96, 122,155,693.98 and 20,027,535.40

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Solution

The fourth proportional to 81,437,845.96, 122,155,693.98 and 20,027,535.40 is: 30,041,038.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,437,845.96 : 122,155,693.98 = 20,027,535.40 : x
  2. Step 2: Convert to fraction form
    81,437,845.96/122,155,693.98 = 20,027,535.40/x
  3. Step 3: Cross multiply
    81,437,845.96x = 122,155,693.98 × 20,027,535.40
  4. Step 4: Simplify right side
    81,437,845.96x = 2,446,477,485,496,017
  5. Step 5: Solve for x
    x = 2,446,477,485,496,017/81,437,845.96
  6. Step 6: Final answer
    x = 30,041,038.74

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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.