Home / 61,911.12-85,439.04-36,419.28

Finding the Fourth Proportional to 61,911.12, 85,439.04 and 36,419.28

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Solution

The fourth proportional to 61,911.12, 85,439.04 and 36,419.28 is: 50,259.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,911.12 : 85,439.04 = 36,419.28 : x
  2. Step 2: Convert to fraction form
    61,911.12/85,439.04 = 36,419.28/x
  3. Step 3: Cross multiply
    61,911.12x = 85,439.04 × 36,419.28
  4. Step 4: Simplify right side
    61,911.12x = 3,111,628,320.69
  5. Step 5: Solve for x
    x = 3,111,628,320.69/61,911.12
  6. Step 6: Final answer
    x = 50,259.60

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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.