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Finding the Fourth Proportional to 61,124.80, 91,741.20 and 36,133.60

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Solution

The fourth proportional to 61,124.80, 91,741.20 and 36,133.60 is: 54,232.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,124.80 : 91,741.20 = 36,133.60 : x
  2. Step 2: Convert to fraction form
    61,124.80/91,741.20 = 36,133.60/x
  3. Step 3: Cross multiply
    61,124.80x = 91,741.20 × 36,133.60
  4. Step 4: Simplify right side
    61,124.80x = 3,314,939,824.32
  5. Step 5: Solve for x
    x = 3,314,939,824.32/61,124.80
  6. Step 6: Final answer
    x = 54,232.32

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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.