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Finding the Fourth Proportional to 66,255.51, 91,435.04 and 37,966.66

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Solution

The fourth proportional to 66,255.51, 91,435.04 and 37,966.66 is: 52,395.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,255.51 : 91,435.04 = 37,966.66 : x
  2. Step 2: Convert to fraction form
    66,255.51/91,435.04 = 37,966.66/x
  3. Step 3: Cross multiply
    66,255.51x = 91,435.04 × 37,966.66
  4. Step 4: Simplify right side
    66,255.51x = 3,471,483,075.77
  5. Step 5: Solve for x
    x = 3,471,483,075.77/66,255.51
  6. Step 6: Final answer
    x = 52,395.39

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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.