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Finding the Fourth Proportional to 82,697,679.60, 123,857,562.60 and 48,685,455.60

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Solution

The fourth proportional to 82,697,679.60, 123,857,562.60 and 48,685,455.60 is: 72,916,941.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,697,679.60 : 123,857,562.60 = 48,685,455.60 : x
  2. Step 2: Convert to fraction form
    82,697,679.60/123,857,562.60 = 48,685,455.60/x
  3. Step 3: Cross multiply
    82,697,679.60x = 123,857,562.60 × 48,685,455.60
  4. Step 4: Simplify right side
    82,697,679.60x = 6,030,061,864,686,520
  5. Step 5: Solve for x
    x = 6,030,061,864,686,520/82,697,679.60
  6. Step 6: Final answer
    x = 72,916,941.49

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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.