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Finding the Fourth Proportional to 66,567.78, 91,859.82 and 37,886.58

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Solution

The fourth proportional to 66,567.78, 91,859.82 and 37,886.58 is: 52,281.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,567.78 : 91,859.82 = 37,886.58 : x
  2. Step 2: Convert to fraction form
    66,567.78/91,859.82 = 37,886.58/x
  3. Step 3: Cross multiply
    66,567.78x = 91,859.82 × 37,886.58
  4. Step 4: Simplify right side
    66,567.78x = 3,480,254,419.22
  5. Step 5: Solve for x
    x = 3,480,254,419.22/66,567.78
  6. Step 6: Final answer
    x = 52,281.37

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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.