Home / 80,007,948.30-120,011,922.45-76,872,665.10

Finding the Fourth Proportional to 80,007,948.30, 120,011,922.45 and 76,872,665.10

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Solution

The fourth proportional to 80,007,948.30, 120,011,922.45 and 76,872,665.10 is: 115,308,997.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,007,948.30 : 120,011,922.45 = 76,872,665.10 : x
  2. Step 2: Convert to fraction form
    80,007,948.30/120,011,922.45 = 76,872,665.10/x
  3. Step 3: Cross multiply
    80,007,948.30x = 120,011,922.45 × 76,872,665.10
  4. Step 4: Simplify right side
    80,007,948.30x = 9,225,636,322,506,022
  5. Step 5: Solve for x
    x = 9,225,636,322,506,022/80,007,948.30
  6. Step 6: Final answer
    x = 115,308,997.65

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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.