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Finding the Fourth Proportional to 61,216.80, 91,845.04 and 30,030.18

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Solution

The fourth proportional to 61,216.80, 91,845.04 and 30,030.18 is: 45,055.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,216.80 : 91,845.04 = 30,030.18 : x
  2. Step 2: Convert to fraction form
    61,216.80/91,845.04 = 30,030.18/x
  3. Step 3: Cross multiply
    61,216.80x = 91,845.04 × 30,030.18
  4. Step 4: Simplify right side
    61,216.80x = 2,758,122,720.12
  5. Step 5: Solve for x
    x = 2,758,122,720.12/61,216.80
  6. Step 6: Final answer
    x = 45,055.00

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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.