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Finding the Fourth Proportional to 72,208.32, 99,607.44 and 41,990.32

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Solution

The fourth proportional to 72,208.32, 99,607.44 and 41,990.32 is: 57,923.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,208.32 : 99,607.44 = 41,990.32 : x
  2. Step 2: Convert to fraction form
    72,208.32/99,607.44 = 41,990.32/x
  3. Step 3: Cross multiply
    72,208.32x = 99,607.44 × 41,990.32
  4. Step 4: Simplify right side
    72,208.32x = 4,182,548,279.98
  5. Step 5: Solve for x
    x = 4,182,548,279.98/72,208.32
  6. Step 6: Final answer
    x = 57,923.36

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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.