Home / 85,883.72-118,520.70-64,335.29

Finding the Fourth Proportional to 85,883.72, 118,520.70 and 64,335.29

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Solution

The fourth proportional to 85,883.72, 118,520.70 and 64,335.29 is: 88,783.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,883.72 : 118,520.70 = 64,335.29 : x
  2. Step 2: Convert to fraction form
    85,883.72/118,520.70 = 64,335.29/x
  3. Step 3: Cross multiply
    85,883.72x = 118,520.70 × 64,335.29
  4. Step 4: Simplify right side
    85,883.72x = 7,625,063,605.50
  5. Step 5: Solve for x
    x = 7,625,063,605.50/85,883.72
  6. Step 6: Final answer
    x = 88,783.57

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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.