Home / 81,887,913.60-122,831,870.40-38,841,192.60

Finding the Fourth Proportional to 81,887,913.60, 122,831,870.40 and 38,841,192.60

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Solution

The fourth proportional to 81,887,913.60, 122,831,870.40 and 38,841,192.60 is: 58,261,788.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,887,913.60 : 122,831,870.40 = 38,841,192.60 : x
  2. Step 2: Convert to fraction form
    81,887,913.60/122,831,870.40 = 38,841,192.60/x
  3. Step 3: Cross multiply
    81,887,913.60x = 122,831,870.40 × 38,841,192.60
  4. Step 4: Simplify right side
    81,887,913.60x = 4,770,936,335,624,639
  5. Step 5: Solve for x
    x = 4,770,936,335,624,639/81,887,913.60
  6. Step 6: Final answer
    x = 58,261,788.90

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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.