Home / 61,185.75-84,484.12-39,685.72

Finding the Fourth Proportional to 61,185.75, 84,484.12 and 39,685.72

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Solution

The fourth proportional to 61,185.75, 84,484.12 and 39,685.72 is: 54,797.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,185.75 : 84,484.12 = 39,685.72 : x
  2. Step 2: Convert to fraction form
    61,185.75/84,484.12 = 39,685.72/x
  3. Step 3: Cross multiply
    61,185.75x = 84,484.12 × 39,685.72
  4. Step 4: Simplify right side
    61,185.75x = 3,352,812,708.35
  5. Step 5: Solve for x
    x = 3,352,812,708.35/61,185.75
  6. Step 6: Final answer
    x = 54,797.28

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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.