Home / 56,455.20-84,716.40-21,398.40

Finding the Fourth Proportional to 56,455.20, 84,716.40 and 21,398.40

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Solution

The fourth proportional to 56,455.20, 84,716.40 and 21,398.40 is: 32,110.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,455.20 : 84,716.40 = 21,398.40 : x
  2. Step 2: Convert to fraction form
    56,455.20/84,716.40 = 21,398.40/x
  3. Step 3: Cross multiply
    56,455.20x = 84,716.40 × 21,398.40
  4. Step 4: Simplify right side
    56,455.20x = 1,812,795,413.76
  5. Step 5: Solve for x
    x = 1,812,795,413.76/56,455.20
  6. Step 6: Final answer
    x = 32,110.34

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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.