Home / 82,385.76-123,588.36-61,740.48

Finding the Fourth Proportional to 82,385.76, 123,588.36 and 61,740.48

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Solution

The fourth proportional to 82,385.76, 123,588.36 and 61,740.48 is: 92,618.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,385.76 : 123,588.36 = 61,740.48 : x
  2. Step 2: Convert to fraction form
    82,385.76/123,588.36 = 61,740.48/x
  3. Step 3: Cross multiply
    82,385.76x = 123,588.36 × 61,740.48
  4. Step 4: Simplify right side
    82,385.76x = 7,630,404,668.81
  5. Step 5: Solve for x
    x = 7,630,404,668.81/82,385.76
  6. Step 6: Final answer
    x = 92,618.00

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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.