Home / 64,829.70-89,261.40-55,120.05

Finding the Fourth Proportional to 64,829.70, 89,261.40 and 55,120.05

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Solution

The fourth proportional to 64,829.70, 89,261.40 and 55,120.05 is: 75,892.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,829.70 : 89,261.40 = 55,120.05 : x
  2. Step 2: Convert to fraction form
    64,829.70/89,261.40 = 55,120.05/x
  3. Step 3: Cross multiply
    64,829.70x = 89,261.40 × 55,120.05
  4. Step 4: Simplify right side
    64,829.70x = 4,920,092,831.07
  5. Step 5: Solve for x
    x = 4,920,092,831.07/64,829.70
  6. Step 6: Final answer
    x = 75,892.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.