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Finding the Fourth Proportional to 49,978.79, 74,980.02 and 14,917.53

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Solution

The fourth proportional to 49,978.79, 74,980.02 and 14,917.53 is: 22,379.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,978.79 : 74,980.02 = 14,917.53 : x
  2. Step 2: Convert to fraction form
    49,978.79/74,980.02 = 14,917.53/x
  3. Step 3: Cross multiply
    49,978.79x = 74,980.02 × 14,917.53
  4. Step 4: Simplify right side
    49,978.79x = 1,118,516,697.75
  5. Step 5: Solve for x
    x = 1,118,516,697.75/49,978.79
  6. Step 6: Final answer
    x = 22,379.83

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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.