Home / 66,766.20-92,130.96-39,903.36

Finding the Fourth Proportional to 66,766.20, 92,130.96 and 39,903.36

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Solution

The fourth proportional to 66,766.20, 92,130.96 and 39,903.36 is: 55,062.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,766.20 : 92,130.96 = 39,903.36 : x
  2. Step 2: Convert to fraction form
    66,766.20/92,130.96 = 39,903.36/x
  3. Step 3: Cross multiply
    66,766.20x = 92,130.96 × 39,903.36
  4. Step 4: Simplify right side
    66,766.20x = 3,676,334,864.03
  5. Step 5: Solve for x
    x = 3,676,334,864.03/66,766.20
  6. Step 6: Final answer
    x = 55,062.81

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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.