Home / 66,353.12-99,477.78-45,240.80

Finding the Fourth Proportional to 66,353.12, 99,477.78 and 45,240.80

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Solution

The fourth proportional to 66,353.12, 99,477.78 and 45,240.80 is: 67,825.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,353.12 : 99,477.78 = 45,240.80 : x
  2. Step 2: Convert to fraction form
    66,353.12/99,477.78 = 45,240.80/x
  3. Step 3: Cross multiply
    66,353.12x = 99,477.78 × 45,240.80
  4. Step 4: Simplify right side
    66,353.12x = 4,500,454,349.42
  5. Step 5: Solve for x
    x = 4,500,454,349.42/66,353.12
  6. Step 6: Final answer
    x = 67,825.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.