Home / 77,133.57-115,671.20-42,054.09

Finding the Fourth Proportional to 77,133.57, 115,671.20 and 42,054.09

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Solution

The fourth proportional to 77,133.57, 115,671.20 and 42,054.09 is: 63,065.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,133.57 : 115,671.20 = 42,054.09 : x
  2. Step 2: Convert to fraction form
    77,133.57/115,671.20 = 42,054.09/x
  3. Step 3: Cross multiply
    77,133.57x = 115,671.20 × 42,054.09
  4. Step 4: Simplify right side
    77,133.57x = 4,864,446,844.94
  5. Step 5: Solve for x
    x = 4,864,446,844.94/77,133.57
  6. Step 6: Final answer
    x = 63,065.24

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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.