Home / 72,175.11-99,599.90-40,347.75

Finding the Fourth Proportional to 72,175.11, 99,599.90 and 40,347.75

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Solution

The fourth proportional to 72,175.11, 99,599.90 and 40,347.75 is: 55,678.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,175.11 : 99,599.90 = 40,347.75 : x
  2. Step 2: Convert to fraction form
    72,175.11/99,599.90 = 40,347.75/x
  3. Step 3: Cross multiply
    72,175.11x = 99,599.90 × 40,347.75
  4. Step 4: Simplify right side
    72,175.11x = 4,018,631,663.49
  5. Step 5: Solve for x
    x = 4,018,631,663.49/72,175.11
  6. Step 6: Final answer
    x = 55,678.91

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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.