Home / 77,289.18-115,241.48-75,889.50

Finding the Fourth Proportional to 77,289.18, 115,241.48 and 75,889.50

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Solution

The fourth proportional to 77,289.18, 115,241.48 and 75,889.50 is: 113,154.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,289.18 : 115,241.48 = 75,889.50 : x
  2. Step 2: Convert to fraction form
    77,289.18/115,241.48 = 75,889.50/x
  3. Step 3: Cross multiply
    77,289.18x = 115,241.48 × 75,889.50
  4. Step 4: Simplify right side
    77,289.18x = 8,745,617,917.01
  5. Step 5: Solve for x
    x = 8,745,617,917.01/77,289.18
  6. Step 6: Final answer
    x = 113,154.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.