Home / 28,386,972.21-42,579,845.55-7,916,146.77

Finding the Fourth Proportional to 28,386,972.21, 42,579,845.55 and 7,916,146.77

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Solution

The fourth proportional to 28,386,972.21, 42,579,845.55 and 7,916,146.77 is: 11,874,049.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,386,972.21 : 42,579,845.55 = 7,916,146.77 : x
  2. Step 2: Convert to fraction form
    28,386,972.21/42,579,845.55 = 7,916,146.77/x
  3. Step 3: Cross multiply
    28,386,972.21x = 42,579,845.55 × 7,916,146.77
  4. Step 4: Simplify right side
    28,386,972.21x = 337,068,306,817,731.31
  5. Step 5: Solve for x
    x = 337,068,306,817,731.31/28,386,972.21
  6. Step 6: Final answer
    x = 11,874,049.28

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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.