Home / 82,607,981.60-123,911,972.40-39,561,260.60

Finding the Fourth Proportional to 82,607,981.60, 123,911,972.40 and 39,561,260.60

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Solution

The fourth proportional to 82,607,981.60, 123,911,972.40 and 39,561,260.60 is: 59,341,890.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,607,981.60 : 123,911,972.40 = 39,561,260.60 : x
  2. Step 2: Convert to fraction form
    82,607,981.60/123,911,972.40 = 39,561,260.60/x
  3. Step 3: Cross multiply
    82,607,981.60x = 123,911,972.40 × 39,561,260.60
  4. Step 4: Simplify right side
    82,607,981.60x = 4,902,113,831,576,408
  5. Step 5: Solve for x
    x = 4,902,113,831,576,408/82,607,981.60
  6. Step 6: Final answer
    x = 59,341,890.90

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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.