Home / 66,420.77-91,659.48-36,206.36

Finding the Fourth Proportional to 66,420.77, 91,659.48 and 36,206.36

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Solution

The fourth proportional to 66,420.77, 91,659.48 and 36,206.36 is: 49,964.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420.77 : 91,659.48 = 36,206.36 : x
  2. Step 2: Convert to fraction form
    66,420.77/91,659.48 = 36,206.36/x
  3. Step 3: Cross multiply
    66,420.77x = 91,659.48 × 36,206.36
  4. Step 4: Simplify right side
    66,420.77x = 3,318,655,672.00
  5. Step 5: Solve for x
    x = 3,318,655,672.00/66,420.77
  6. Step 6: Final answer
    x = 49,964.13

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1.5x scale

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.