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Finding the Fourth Proportional to 61,119.60, 91,666.60 and 29,977.20

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Solution

The fourth proportional to 61,119.60, 91,666.60 and 29,977.20 is: 44,959.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,119.60 : 91,666.60 = 29,977.20 : x
  2. Step 2: Convert to fraction form
    61,119.60/91,666.60 = 29,977.20/x
  3. Step 3: Cross multiply
    61,119.60x = 91,666.60 × 29,977.20
  4. Step 4: Simplify right side
    61,119.60x = 2,747,908,001.52
  5. Step 5: Solve for x
    x = 2,747,908,001.52/61,119.60
  6. Step 6: Final answer
    x = 44,959.52

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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.