Home / 73,102.12-109,686.54-39,772.20

Finding the Fourth Proportional to 73,102.12, 109,686.54 and 39,772.20

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Solution

The fourth proportional to 73,102.12, 109,686.54 and 39,772.20 is: 59,676.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,102.12 : 109,686.54 = 39,772.20 : x
  2. Step 2: Convert to fraction form
    73,102.12/109,686.54 = 39,772.20/x
  3. Step 3: Cross multiply
    73,102.12x = 109,686.54 × 39,772.20
  4. Step 4: Simplify right side
    73,102.12x = 4,362,475,006.19
  5. Step 5: Solve for x
    x = 4,362,475,006.19/73,102.12
  6. Step 6: Final answer
    x = 59,676.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.