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Finding the Fourth Proportional to 61,287.40, 91,928.60 and 16,913.02

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Solution

The fourth proportional to 61,287.40, 91,928.60 and 16,913.02 is: 25,368.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,287.40 : 91,928.60 = 16,913.02 : x
  2. Step 2: Convert to fraction form
    61,287.40/91,928.60 = 16,913.02/x
  3. Step 3: Cross multiply
    61,287.40x = 91,928.60 × 16,913.02
  4. Step 4: Simplify right side
    61,287.40x = 1,554,790,250.37
  5. Step 5: Solve for x
    x = 1,554,790,250.37/61,287.40
  6. Step 6: Final answer
    x = 25,368.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.