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Finding the Fourth Proportional to 66,339.42, 91,567.71 and 53,003.58

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Solution

The fourth proportional to 66,339.42, 91,567.71 and 53,003.58 is: 73,160.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,339.42 : 91,567.71 = 53,003.58 : x
  2. Step 2: Convert to fraction form
    66,339.42/91,567.71 = 53,003.58/x
  3. Step 3: Cross multiply
    66,339.42x = 91,567.71 × 53,003.58
  4. Step 4: Simplify right side
    66,339.42x = 4,853,416,442.40
  5. Step 5: Solve for x
    x = 4,853,416,442.40/66,339.42
  6. Step 6: Final answer
    x = 73,160.37

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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.