Home / 78,810,403.20-118,016,539.20-51,737,481.60

Finding the Fourth Proportional to 78,810,403.20, 118,016,539.20 and 51,737,481.60

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Solution

The fourth proportional to 78,810,403.20, 118,016,539.20 and 51,737,481.60 is: 77,475,539.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,810,403.20 : 118,016,539.20 = 51,737,481.60 : x
  2. Step 2: Convert to fraction form
    78,810,403.20/118,016,539.20 = 51,737,481.60/x
  3. Step 3: Cross multiply
    78,810,403.20x = 118,016,539.20 × 51,737,481.60
  4. Step 4: Simplify right side
    78,810,403.20x = 6,105,878,525,355,679
  5. Step 5: Solve for x
    x = 6,105,878,525,355,679/78,810,403.20
  6. Step 6: Final answer
    x = 77,475,539.74

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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.