Home / 78,281,862.80-117,422,794.20-51,072,083.60

Finding the Fourth Proportional to 78,281,862.80, 117,422,794.20 and 51,072,083.60

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Solution

The fourth proportional to 78,281,862.80, 117,422,794.20 and 51,072,083.60 is: 76,608,125.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,281,862.80 : 117,422,794.20 = 51,072,083.60 : x
  2. Step 2: Convert to fraction form
    78,281,862.80/117,422,794.20 = 51,072,083.60/x
  3. Step 3: Cross multiply
    78,281,862.80x = 117,422,794.20 × 51,072,083.60
  4. Step 4: Simplify right side
    78,281,862.80x = 5,997,026,761,927,995
  5. Step 5: Solve for x
    x = 5,997,026,761,927,995/78,281,862.80
  6. Step 6: Final answer
    x = 76,608,125.40

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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.