Home / 66,101.76-91,143.36-49,305.60

Finding the Fourth Proportional to 66,101.76, 91,143.36 and 49,305.60

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Solution

The fourth proportional to 66,101.76, 91,143.36 and 49,305.60 is: 67,984.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,101.76 : 91,143.36 = 49,305.60 : x
  2. Step 2: Convert to fraction form
    66,101.76/91,143.36 = 49,305.60/x
  3. Step 3: Cross multiply
    66,101.76x = 91,143.36 × 49,305.60
  4. Step 4: Simplify right side
    66,101.76x = 4,493,878,050.82
  5. Step 5: Solve for x
    x = 4,493,878,050.82/66,101.76
  6. Step 6: Final answer
    x = 67,984.24

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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.