Home / 73,319,021.40-109,978,532.10-72,185,280.60

Finding the Fourth Proportional to 73,319,021.40, 109,978,532.10 and 72,185,280.60

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Solution

The fourth proportional to 73,319,021.40, 109,978,532.10 and 72,185,280.60 is: 108,277,920.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,319,021.40 : 109,978,532.10 = 72,185,280.60 : x
  2. Step 2: Convert to fraction form
    73,319,021.40/109,978,532.10 = 72,185,280.60/x
  3. Step 3: Cross multiply
    73,319,021.40x = 109,978,532.10 × 72,185,280.60
  4. Step 4: Simplify right side
    73,319,021.40x = 7,938,831,199,614,606
  5. Step 5: Solve for x
    x = 7,938,831,199,614,606/73,319,021.40
  6. Step 6: Final answer
    x = 108,277,920.90

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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.