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Finding the Fourth Proportional to 66,505.95, 99,630.29 and 55,704.06

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Solution

The fourth proportional to 66,505.95, 99,630.29 and 55,704.06 is: 83,448.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,505.95 : 99,630.29 = 55,704.06 : x
  2. Step 2: Convert to fraction form
    66,505.95/99,630.29 = 55,704.06/x
  3. Step 3: Cross multiply
    66,505.95x = 99,630.29 × 55,704.06
  4. Step 4: Simplify right side
    66,505.95x = 5,549,811,373.46
  5. Step 5: Solve for x
    x = 5,549,811,373.46/66,505.95
  6. Step 6: Final answer
    x = 83,448.34

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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.