Home / 90,877.90-125,452.47-65,056.72

Finding the Fourth Proportional to 90,877.90, 125,452.47 and 65,056.72

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Solution

The fourth proportional to 90,877.90, 125,452.47 and 65,056.72 is: 89,807.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,877.90 : 125,452.47 = 65,056.72 : x
  2. Step 2: Convert to fraction form
    90,877.90/125,452.47 = 65,056.72/x
  3. Step 3: Cross multiply
    90,877.90x = 125,452.47 × 65,056.72
  4. Step 4: Simplify right side
    90,877.90x = 8,161,526,196.68
  5. Step 5: Solve for x
    x = 8,161,526,196.68/90,877.90
  6. Step 6: Final answer
    x = 89,807.60

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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.