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Finding the Fourth Proportional to 57,159.73, 85,726.63 and 20,223.73

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Solution

The fourth proportional to 57,159.73, 85,726.63 and 20,223.73 is: 30,331.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,159.73 : 85,726.63 = 20,223.73 : x
  2. Step 2: Convert to fraction form
    57,159.73/85,726.63 = 20,223.73/x
  3. Step 3: Cross multiply
    57,159.73x = 85,726.63 × 20,223.73
  4. Step 4: Simplify right side
    57,159.73x = 1,733,712,218.93
  5. Step 5: Solve for x
    x = 1,733,712,218.93/57,159.73
  6. Step 6: Final answer
    x = 30,331.01

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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.