Home / 81,657,007.10-122,485,510.65-21,072,733.10

Finding the Fourth Proportional to 81,657,007.10, 122,485,510.65 and 21,072,733.10

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Solution

The fourth proportional to 81,657,007.10, 122,485,510.65 and 21,072,733.10 is: 31,609,099.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,657,007.10 : 122,485,510.65 = 21,072,733.10 : x
  2. Step 2: Convert to fraction form
    81,657,007.10/122,485,510.65 = 21,072,733.10/x
  3. Step 3: Cross multiply
    81,657,007.10x = 122,485,510.65 × 21,072,733.10
  4. Step 4: Simplify right side
    81,657,007.10x = 2,581,104,474,544,658
  5. Step 5: Solve for x
    x = 2,581,104,474,544,658/81,657,007.10
  6. Step 6: Final answer
    x = 31,609,099.65

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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.