Home / 28,139,780.67-42,213,075.56-9,940,251.48

Finding the Fourth Proportional to 28,139,780.67, 42,213,075.56 and 9,940,251.48

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Solution

The fourth proportional to 28,139,780.67, 42,213,075.56 and 9,940,251.48 is: 14,911,579.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139,780.67 : 42,213,075.56 = 9,940,251.48 : x
  2. Step 2: Convert to fraction form
    28,139,780.67/42,213,075.56 = 9,940,251.48/x
  3. Step 3: Cross multiply
    28,139,780.67x = 42,213,075.56 × 9,940,251.48
  4. Step 4: Simplify right side
    28,139,780.67x = 419,608,586,730,648.81
  5. Step 5: Solve for x
    x = 419,608,586,730,648.81/28,139,780.67
  6. Step 6: Final answer
    x = 14,911,579.86

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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.