Home / 81,569.99-122,340.40-51,899.69

Finding the Fourth Proportional to 81,569.99, 122,340.40 and 51,899.69

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Solution

The fourth proportional to 81,569.99, 122,340.40 and 51,899.69 is: 77,840.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,569.99 : 122,340.40 = 51,899.69 : x
  2. Step 2: Convert to fraction form
    81,569.99/122,340.40 = 51,899.69/x
  3. Step 3: Cross multiply
    81,569.99x = 122,340.40 × 51,899.69
  4. Step 4: Simplify right side
    81,569.99x = 6,349,428,834.48
  5. Step 5: Solve for x
    x = 6,349,428,834.48/81,569.99
  6. Step 6: Final answer
    x = 77,840.26

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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.