Home / 81,976,095.60-122,964,143.40-21,391,821.60

Finding the Fourth Proportional to 81,976,095.60, 122,964,143.40 and 21,391,821.60

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Solution

The fourth proportional to 81,976,095.60, 122,964,143.40 and 21,391,821.60 is: 32,087,732.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,976,095.60 : 122,964,143.40 = 21,391,821.60 : x
  2. Step 2: Convert to fraction form
    81,976,095.60/122,964,143.40 = 21,391,821.60/x
  3. Step 3: Cross multiply
    81,976,095.60x = 122,964,143.40 × 21,391,821.60
  4. Step 4: Simplify right side
    81,976,095.60x = 2,630,427,018,809,618
  5. Step 5: Solve for x
    x = 2,630,427,018,809,618/81,976,095.60
  6. Step 6: Final answer
    x = 32,087,732.40

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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.