Home / 90,489.02-124,869.21-54,657.86

Finding the Fourth Proportional to 90,489.02, 124,869.21 and 54,657.86

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Solution

The fourth proportional to 90,489.02, 124,869.21 and 54,657.86 is: 75,424.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,489.02 : 124,869.21 = 54,657.86 : x
  2. Step 2: Convert to fraction form
    90,489.02/124,869.21 = 54,657.86/x
  3. Step 3: Cross multiply
    90,489.02x = 124,869.21 × 54,657.86
  4. Step 4: Simplify right side
    90,489.02x = 6,825,083,798.49
  5. Step 5: Solve for x
    x = 6,825,083,798.49/90,489.02
  6. Step 6: Final answer
    x = 75,424.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.