Home / 28,391,763.60-42,587,645.40-7,921,443.60

Finding the Fourth Proportional to 28,391,763.60, 42,587,645.40 and 7,921,443.60

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Solution

The fourth proportional to 28,391,763.60, 42,587,645.40 and 7,921,443.60 is: 11,882,165.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,391,763.60 : 42,587,645.40 = 7,921,443.60 : x
  2. Step 2: Convert to fraction form
    28,391,763.60/42,587,645.40 = 7,921,443.60/x
  3. Step 3: Cross multiply
    28,391,763.60x = 42,587,645.40 × 7,921,443.60
  4. Step 4: Simplify right side
    28,391,763.60x = 337,355,631,092,899.44
  5. Step 5: Solve for x
    x = 337,355,631,092,899.44/28,391,763.60
  6. Step 6: Final answer
    x = 11,882,165.40

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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.