Home / 76,862.47-114,529.59-68,478.06

Finding the Fourth Proportional to 76,862.47, 114,529.59 and 68,478.06

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Solution

The fourth proportional to 76,862.47, 114,529.59 and 68,478.06 is: 102,036.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,862.47 : 114,529.59 = 68,478.06 : x
  2. Step 2: Convert to fraction form
    76,862.47/114,529.59 = 68,478.06/x
  3. Step 3: Cross multiply
    76,862.47x = 114,529.59 × 68,478.06
  4. Step 4: Simplify right side
    76,862.47x = 7,842,764,135.80
  5. Step 5: Solve for x
    x = 7,842,764,135.80/76,862.47
  6. Step 6: Final answer
    x = 102,036.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.