Home / 28,171,929.60-42,257,894.40-7,977,171.60

Finding the Fourth Proportional to 28,171,929.60, 42,257,894.40 and 7,977,171.60

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Solution

The fourth proportional to 28,171,929.60, 42,257,894.40 and 7,977,171.60 is: 11,965,757.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,171,929.60 : 42,257,894.40 = 7,977,171.60 : x
  2. Step 2: Convert to fraction form
    28,171,929.60/42,257,894.40 = 7,977,171.60/x
  3. Step 3: Cross multiply
    28,171,929.60x = 42,257,894.40 × 7,977,171.60
  4. Step 4: Simplify right side
    28,171,929.60x = 337,098,475,083,479
  5. Step 5: Solve for x
    x = 337,098,475,083,479/28,171,929.60
  6. Step 6: Final answer
    x = 11,965,757.40

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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.