Home / 78,563,805.76-108,421,431.96-43,756,511.68

Finding the Fourth Proportional to 78,563,805.76, 108,421,431.96 and 43,756,511.68

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Solution

The fourth proportional to 78,563,805.76, 108,421,431.96 and 43,756,511.68 is: 60,385,868.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,563,805.76 : 108,421,431.96 = 43,756,511.68 : x
  2. Step 2: Convert to fraction form
    78,563,805.76/108,421,431.96 = 43,756,511.68/x
  3. Step 3: Cross multiply
    78,563,805.76x = 108,421,431.96 × 43,756,511.68
  4. Step 4: Simplify right side
    78,563,805.76x = 4,744,143,653,920,065
  5. Step 5: Solve for x
    x = 4,744,143,653,920,065/78,563,805.76
  6. Step 6: Final answer
    x = 60,385,868.63

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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.