Home / 81,465,509.40-122,339,981.70-43,201,757.40

Finding the Fourth Proportional to 81,465,509.40, 122,339,981.70 and 43,201,757.40

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Solution

The fourth proportional to 81,465,509.40, 122,339,981.70 and 43,201,757.40 is: 64,877,789.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,465,509.40 : 122,339,981.70 = 43,201,757.40 : x
  2. Step 2: Convert to fraction form
    81,465,509.40/122,339,981.70 = 43,201,757.40/x
  3. Step 3: Cross multiply
    81,465,509.40x = 122,339,981.70 × 43,201,757.40
  4. Step 4: Simplify right side
    81,465,509.40x = 5,285,302,209,723,840
  5. Step 5: Solve for x
    x = 5,285,302,209,723,840/81,465,509.40
  6. Step 6: Final answer
    x = 64,877,789.98

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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.