Home / 66,081.40-99,617.28-61,682.16

Finding the Fourth Proportional to 66,081.40, 99,617.28 and 61,682.16

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Solution

The fourth proportional to 66,081.40, 99,617.28 and 61,682.16 is: 92,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,081.40 : 99,617.28 = 61,682.16 : x
  2. Step 2: Convert to fraction form
    66,081.40/99,617.28 = 61,682.16/x
  3. Step 3: Cross multiply
    66,081.40x = 99,617.28 × 61,682.16
  4. Step 4: Simplify right side
    66,081.40x = 6,144,608,659.84
  5. Step 5: Solve for x
    x = 6,144,608,659.84/66,081.40
  6. Step 6: Final answer
    x = 92,985.45

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.