Home / 77,025.40-115,282.10-55,905.40

Finding the Fourth Proportional to 77,025.40, 115,282.10 and 55,905.40

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Solution

The fourth proportional to 77,025.40, 115,282.10 and 55,905.40 is: 83,672.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,025.40 : 115,282.10 = 55,905.40 : x
  2. Step 2: Convert to fraction form
    77,025.40/115,282.10 = 55,905.40/x
  3. Step 3: Cross multiply
    77,025.40x = 115,282.10 × 55,905.40
  4. Step 4: Simplify right side
    77,025.40x = 6,444,891,913.34
  5. Step 5: Solve for x
    x = 6,444,891,913.34/77,025.40
  6. Step 6: Final answer
    x = 83,672.29

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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.