Home / 56,188.95-84,295.73-21,128.61

Finding the Fourth Proportional to 56,188.95, 84,295.73 and 21,128.61

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Solution

The fourth proportional to 56,188.95, 84,295.73 and 21,128.61 is: 31,697.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,188.95 : 84,295.73 = 21,128.61 : x
  2. Step 2: Convert to fraction form
    56,188.95/84,295.73 = 21,128.61/x
  3. Step 3: Cross multiply
    56,188.95x = 84,295.73 × 21,128.61
  4. Step 4: Simplify right side
    56,188.95x = 1,781,051,340.55
  5. Step 5: Solve for x
    x = 1,781,051,340.55/56,188.95
  6. Step 6: Final answer
    x = 31,697.54

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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.