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Finding the Fourth Proportional to 61,980.38, 85,532.94 and 33,686.07

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Solution

The fourth proportional to 61,980.38, 85,532.94 and 33,686.07 is: 46,486.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,980.38 : 85,532.94 = 33,686.07 : x
  2. Step 2: Convert to fraction form
    61,980.38/85,532.94 = 33,686.07/x
  3. Step 3: Cross multiply
    61,980.38x = 85,532.94 × 33,686.07
  4. Step 4: Simplify right side
    61,980.38x = 2,881,268,435.72
  5. Step 5: Solve for x
    x = 2,881,268,435.72/61,980.38
  6. Step 6: Final answer
    x = 46,486.78

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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.