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Finding the Fourth Proportional to 72,245.84, 99,712.14 and 43,570.58

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Solution

The fourth proportional to 72,245.84, 99,712.14 and 43,570.58 is: 60,135.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,245.84 : 99,712.14 = 43,570.58 : x
  2. Step 2: Convert to fraction form
    72,245.84/99,712.14 = 43,570.58/x
  3. Step 3: Cross multiply
    72,245.84x = 99,712.14 × 43,570.58
  4. Step 4: Simplify right side
    72,245.84x = 4,344,515,772.84
  5. Step 5: Solve for x
    x = 4,344,515,772.84/72,245.84
  6. Step 6: Final answer
    x = 60,135.17

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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.