Home / 68,624.07-102,865.63-38,978.61

Finding the Fourth Proportional to 68,624.07, 102,865.63 and 38,978.61

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Solution

The fourth proportional to 68,624.07, 102,865.63 and 38,978.61 is: 58,427.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,624.07 : 102,865.63 = 38,978.61 : x
  2. Step 2: Convert to fraction form
    68,624.07/102,865.63 = 38,978.61/x
  3. Step 3: Cross multiply
    68,624.07x = 102,865.63 × 38,978.61
  4. Step 4: Simplify right side
    68,624.07x = 4,009,559,274.17
  5. Step 5: Solve for x
    x = 4,009,559,274.17/68,624.07
  6. Step 6: Final answer
    x = 58,427.89

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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.