Home / 75,688.77-103,694.09-72,851.07

Finding the Fourth Proportional to 75,688.77, 103,694.09 and 72,851.07

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Solution

The fourth proportional to 75,688.77, 103,694.09 and 72,851.07 is: 99,806.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,688.77 : 103,694.09 = 72,851.07 : x
  2. Step 2: Convert to fraction form
    75,688.77/103,694.09 = 72,851.07/x
  3. Step 3: Cross multiply
    75,688.77x = 103,694.09 × 72,851.07
  4. Step 4: Simplify right side
    75,688.77x = 7,554,225,409.18
  5. Step 5: Solve for x
    x = 7,554,225,409.18/75,688.77
  6. Step 6: Final answer
    x = 99,806.42

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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.