Home / 72,029.61-99,405.89-40,199.03

Finding the Fourth Proportional to 72,029.61, 99,405.89 and 40,199.03

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Solution

The fourth proportional to 72,029.61, 99,405.89 and 40,199.03 is: 55,477.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,029.61 : 99,405.89 = 40,199.03 : x
  2. Step 2: Convert to fraction form
    72,029.61/99,405.89 = 40,199.03/x
  3. Step 3: Cross multiply
    72,029.61x = 99,405.89 × 40,199.03
  4. Step 4: Simplify right side
    72,029.61x = 3,996,020,153.29
  5. Step 5: Solve for x
    x = 3,996,020,153.29/72,029.61
  6. Step 6: Final answer
    x = 55,477.46

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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.