Home / 61,785.14-85,272.58-39,126.20

Finding the Fourth Proportional to 61,785.14, 85,272.58 and 39,126.20

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Solution

The fourth proportional to 61,785.14, 85,272.58 and 39,126.20 is: 53,999.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,785.14 : 85,272.58 = 39,126.20 : x
  2. Step 2: Convert to fraction form
    61,785.14/85,272.58 = 39,126.20/x
  3. Step 3: Cross multiply
    61,785.14x = 85,272.58 × 39,126.20
  4. Step 4: Simplify right side
    61,785.14x = 3,336,392,019.60
  5. Step 5: Solve for x
    x = 3,336,392,019.60/61,785.14
  6. Step 6: Final answer
    x = 53,999.91

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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.