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Finding the Fourth Proportional to 90,171.80, 124,438.40 and 51,938.22

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Solution

The fourth proportional to 90,171.80, 124,438.40 and 51,938.22 is: 71,675.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,171.80 : 124,438.40 = 51,938.22 : x
  2. Step 2: Convert to fraction form
    90,171.80/124,438.40 = 51,938.22/x
  3. Step 3: Cross multiply
    90,171.80x = 124,438.40 × 51,938.22
  4. Step 4: Simplify right side
    90,171.80x = 6,463,108,610.86
  5. Step 5: Solve for x
    x = 6,463,108,610.86/90,171.80
  6. Step 6: Final answer
    x = 71,675.49

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1.5x scale

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.