Home / 61,785.63-85,273.28-39,126.69

Finding the Fourth Proportional to 61,785.63, 85,273.28 and 39,126.69

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Solution

The fourth proportional to 61,785.63, 85,273.28 and 39,126.69 is: 54,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,785.63 : 85,273.28 = 39,126.69 : x
  2. Step 2: Convert to fraction form
    61,785.63/85,273.28 = 39,126.69/x
  3. Step 3: Cross multiply
    61,785.63x = 85,273.28 × 39,126.69
  4. Step 4: Simplify right side
    61,785.63x = 3,336,460,996.21
  5. Step 5: Solve for x
    x = 3,336,460,996.21/61,785.63
  6. Step 6: Final answer
    x = 54,000.60

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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.