Home / 78,213,486.66-107,933,912.70-42,930,246.83

Finding the Fourth Proportional to 78,213,486.66, 107,933,912.70 and 42,930,246.83

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Solution

The fourth proportional to 78,213,486.66, 107,933,912.70 and 42,930,246.83 is: 59,243,357.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,213,486.66 : 107,933,912.70 = 42,930,246.83 : x
  2. Step 2: Convert to fraction form
    78,213,486.66/107,933,912.70 = 42,930,246.83/x
  3. Step 3: Cross multiply
    78,213,486.66x = 107,933,912.70 × 42,930,246.83
  4. Step 4: Simplify right side
    78,213,486.66x = 4,633,629,513,808,507
  5. Step 5: Solve for x
    x = 4,633,629,513,808,507/78,213,486.66
  6. Step 6: Final answer
    x = 59,243,357.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.