Home / 78,741.06-118,192.23-61,400.58

Finding the Fourth Proportional to 78,741.06, 118,192.23 and 61,400.58

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Solution

The fourth proportional to 78,741.06, 118,192.23 and 61,400.58 is: 92,163.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,741.06 : 118,192.23 = 61,400.58 : x
  2. Step 2: Convert to fraction form
    78,741.06/118,192.23 = 61,400.58/x
  3. Step 3: Cross multiply
    78,741.06x = 118,192.23 × 61,400.58
  4. Step 4: Simplify right side
    78,741.06x = 7,257,071,473.49
  5. Step 5: Solve for x
    x = 7,257,071,473.49/78,741.06
  6. Step 6: Final answer
    x = 92,163.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.