Home / 78,889,403.50-118,334,103.41-21,381,673.52

Finding the Fourth Proportional to 78,889,403.50, 118,334,103.41 and 21,381,673.52

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Solution

The fourth proportional to 78,889,403.50, 118,334,103.41 and 21,381,673.52 is: 32,072,509.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,403.50 : 118,334,103.41 = 21,381,673.52 : x
  2. Step 2: Convert to fraction form
    78,889,403.50/118,334,103.41 = 21,381,673.52/x
  3. Step 3: Cross multiply
    78,889,403.50x = 118,334,103.41 × 21,381,673.52
  4. Step 4: Simplify right side
    78,889,403.50x = 2,530,181,165,394,538.50
  5. Step 5: Solve for x
    x = 2,530,181,165,394,538.50/78,889,403.50
  6. Step 6: Final answer
    x = 32,072,509.78

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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.