Home / 61,665.30-85,077.34-40,145.22

Finding the Fourth Proportional to 61,665.30, 85,077.34 and 40,145.22

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Solution

The fourth proportional to 61,665.30, 85,077.34 and 40,145.22 is: 55,386.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,665.30 : 85,077.34 = 40,145.22 : x
  2. Step 2: Convert to fraction form
    61,665.30/85,077.34 = 40,145.22/x
  3. Step 3: Cross multiply
    61,665.30x = 85,077.34 × 40,145.22
  4. Step 4: Simplify right side
    61,665.30x = 3,415,448,430.95
  5. Step 5: Solve for x
    x = 3,415,448,430.95/61,665.30
  6. Step 6: Final answer
    x = 55,386.88

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1.5x scale

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.