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Finding the Fourth Proportional to 61,286.95, 84,585.84 and 57,284.74

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Solution

The fourth proportional to 61,286.95, 84,585.84 and 57,284.74 is: 79,062.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,286.95 : 84,585.84 = 57,284.74 : x
  2. Step 2: Convert to fraction form
    61,286.95/84,585.84 = 57,284.74/x
  3. Step 3: Cross multiply
    61,286.95x = 84,585.84 × 57,284.74
  4. Step 4: Simplify right side
    61,286.95x = 4,845,477,565.66
  5. Step 5: Solve for x
    x = 4,845,477,565.66/61,286.95
  6. Step 6: Final answer
    x = 79,062.14

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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.