Home / 82,105,715.53-112,702,339.25-72,605,125.09

Finding the Fourth Proportional to 82,105,715.53, 112,702,339.25 and 72,605,125.09

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Solution

The fourth proportional to 82,105,715.53, 112,702,339.25 and 72,605,125.09 is: 99,661,362.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,105,715.53 : 112,702,339.25 = 72,605,125.09 : x
  2. Step 2: Convert to fraction form
    82,105,715.53/112,702,339.25 = 72,605,125.09/x
  3. Step 3: Cross multiply
    82,105,715.53x = 112,702,339.25 × 72,605,125.09
  4. Step 4: Simplify right side
    82,105,715.53x = 8,182,767,439,181,867
  5. Step 5: Solve for x
    x = 8,182,767,439,181,867/82,105,715.53
  6. Step 6: Final answer
    x = 99,661,362.02

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.