Home / 81,530.55-122,307.98-28,935.63

Finding the Fourth Proportional to 81,530.55, 122,307.98 and 28,935.63

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Solution

The fourth proportional to 81,530.55, 122,307.98 and 28,935.63 is: 43,407.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,530.55 : 122,307.98 = 28,935.63 : x
  2. Step 2: Convert to fraction form
    81,530.55/122,307.98 = 28,935.63/x
  3. Step 3: Cross multiply
    81,530.55x = 122,307.98 × 28,935.63
  4. Step 4: Simplify right side
    81,530.55x = 3,539,058,310.65
  5. Step 5: Solve for x
    x = 3,539,058,310.65/81,530.55
  6. Step 6: Final answer
    x = 43,407.76

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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.