Home / 66,421.02-99,520.80-54,611.22

Finding the Fourth Proportional to 66,421.02, 99,520.80 and 54,611.22

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Solution

The fourth proportional to 66,421.02, 99,520.80 and 54,611.22 is: 81,825.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,421.02 : 99,520.80 = 54,611.22 : x
  2. Step 2: Convert to fraction form
    66,421.02/99,520.80 = 54,611.22/x
  3. Step 3: Cross multiply
    66,421.02x = 99,520.80 × 54,611.22
  4. Step 4: Simplify right side
    66,421.02x = 5,434,952,303.38
  5. Step 5: Solve for x
    x = 5,434,952,303.38/66,421.02
  6. Step 6: Final answer
    x = 81,825.79

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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.