Home / 78,898.08-118,288.80-28,951.86

Finding the Fourth Proportional to 78,898.08, 118,288.80 and 28,951.86

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Solution

The fourth proportional to 78,898.08, 118,288.80 and 28,951.86 is: 43,406.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,898.08 : 118,288.80 = 28,951.86 : x
  2. Step 2: Convert to fraction form
    78,898.08/118,288.80 = 28,951.86/x
  3. Step 3: Cross multiply
    78,898.08x = 118,288.80 × 28,951.86
  4. Step 4: Simplify right side
    78,898.08x = 3,424,680,777.17
  5. Step 5: Solve for x
    x = 3,424,680,777.17/78,898.08
  6. Step 6: Final answer
    x = 43,406.39

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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.