Home / 78,215.16-107,537.24-69,635.64

Finding the Fourth Proportional to 78,215.16, 107,537.24 and 69,635.64

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Solution

The fourth proportional to 78,215.16, 107,537.24 and 69,635.64 is: 95,741.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,215.16 : 107,537.24 = 69,635.64 : x
  2. Step 2: Convert to fraction form
    78,215.16/107,537.24 = 69,635.64/x
  3. Step 3: Cross multiply
    78,215.16x = 107,537.24 × 69,635.64
  4. Step 4: Simplify right side
    78,215.16x = 7,488,424,531.23
  5. Step 5: Solve for x
    x = 7,488,424,531.23/78,215.16
  6. Step 6: Final answer
    x = 95,741.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.