Home / 78,808,801.20-118,014,136.20-51,735,879.60

Finding the Fourth Proportional to 78,808,801.20, 118,014,136.20 and 51,735,879.60

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Solution

The fourth proportional to 78,808,801.20, 118,014,136.20 and 51,735,879.60 is: 77,473,138.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,808,801.20 : 118,014,136.20 = 51,735,879.60 : x
  2. Step 2: Convert to fraction form
    78,808,801.20/118,014,136.20 = 51,735,879.60/x
  3. Step 3: Cross multiply
    78,808,801.20x = 118,014,136.20 × 51,735,879.60
  4. Step 4: Simplify right side
    78,808,801.20x = 6,105,565,141,541,202
  5. Step 5: Solve for x
    x = 6,105,565,141,541,202/78,808,801.20
  6. Step 6: Final answer
    x = 77,473,138.13

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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.