Home / 85,784.07-118,353.67-51,779.64

Finding the Fourth Proportional to 85,784.07, 118,353.67 and 51,779.64

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Solution

The fourth proportional to 85,784.07, 118,353.67 and 51,779.64 is: 71,438.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,784.07 : 118,353.67 = 51,779.64 : x
  2. Step 2: Convert to fraction form
    85,784.07/118,353.67 = 51,779.64/x
  3. Step 3: Cross multiply
    85,784.07x = 118,353.67 × 51,779.64
  4. Step 4: Simplify right side
    85,784.07x = 6,128,310,425.28
  5. Step 5: Solve for x
    x = 6,128,310,425.28/85,784.07
  6. Step 6: Final answer
    x = 71,438.79

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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.