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Finding the Fourth Proportional to 71,937.60, 99,256.80 and 43,642.56

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Solution

The fourth proportional to 71,937.60, 99,256.80 and 43,642.56 is: 60,216.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,937.60 : 99,256.80 = 43,642.56 : x
  2. Step 2: Convert to fraction form
    71,937.60/99,256.80 = 43,642.56/x
  3. Step 3: Cross multiply
    71,937.60x = 99,256.80 × 43,642.56
  4. Step 4: Simplify right side
    71,937.60x = 4,331,820,849.41
  5. Step 5: Solve for x
    x = 4,331,820,849.41/71,937.60
  6. Step 6: Final answer
    x = 60,216.37

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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.