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Finding the Fourth Proportional to 56,008.89, 83,986.88 and 20,445.53

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Solution

The fourth proportional to 56,008.89, 83,986.88 and 20,445.53 is: 30,658.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,008.89 : 83,986.88 = 20,445.53 : x
  2. Step 2: Convert to fraction form
    56,008.89/83,986.88 = 20,445.53/x
  3. Step 3: Cross multiply
    56,008.89x = 83,986.88 × 20,445.53
  4. Step 4: Simplify right side
    56,008.89x = 1,717,155,752.48
  5. Step 5: Solve for x
    x = 1,717,155,752.48/56,008.89
  6. Step 6: Final answer
    x = 30,658.63

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1.5x scale

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.