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Finding the Fourth Proportional to 40,572, 55,987.20 and 22,667.76

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Solution

The fourth proportional to 40,572, 55,987.20 and 22,667.76 is: 31,280.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,572 : 55,987.20 = 22,667.76 : x
  2. Step 2: Convert to fraction form
    40,572/55,987.20 = 22,667.76/x
  3. Step 3: Cross multiply
    40,572x = 55,987.20 × 22,667.76
  4. Step 4: Simplify right side
    40,572x = 1,269,104,412.67
  5. Step 5: Solve for x
    x = 1,269,104,412.67/40,572
  6. Step 6: Final answer
    x = 31,280.30

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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.