Home / 66,005.96-91,080.06-42,146.60

Finding the Fourth Proportional to 66,005.96, 91,080.06 and 42,146.60

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Solution

The fourth proportional to 66,005.96, 91,080.06 and 42,146.60 is: 58,157.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,005.96 : 91,080.06 = 42,146.60 : x
  2. Step 2: Convert to fraction form
    66,005.96/91,080.06 = 42,146.60/x
  3. Step 3: Cross multiply
    66,005.96x = 91,080.06 × 42,146.60
  4. Step 4: Simplify right side
    66,005.96x = 3,838,714,856.80
  5. Step 5: Solve for x
    x = 3,838,714,856.80/66,005.96
  6. Step 6: Final answer
    x = 58,157.09

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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.