Home / 77,009.20-115,607.40-48,929.20

Finding the Fourth Proportional to 77,009.20, 115,607.40 and 48,929.20

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Solution

The fourth proportional to 77,009.20, 115,607.40 and 48,929.20 is: 73,453.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,009.20 : 115,607.40 = 48,929.20 : x
  2. Step 2: Convert to fraction form
    77,009.20/115,607.40 = 48,929.20/x
  3. Step 3: Cross multiply
    77,009.20x = 115,607.40 × 48,929.20
  4. Step 4: Simplify right side
    77,009.20x = 5,656,577,596.08
  5. Step 5: Solve for x
    x = 5,656,577,596.08/77,009.20
  6. Step 6: Final answer
    x = 73,453.27

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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.