Home / 66,063.90-91,153.86-39,215.36

Finding the Fourth Proportional to 66,063.90, 91,153.86 and 39,215.36

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Solution

The fourth proportional to 66,063.90, 91,153.86 and 39,215.36 is: 54,108.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,063.90 : 91,153.86 = 39,215.36 : x
  2. Step 2: Convert to fraction form
    66,063.90/91,153.86 = 39,215.36/x
  3. Step 3: Cross multiply
    66,063.90x = 91,153.86 × 39,215.36
  4. Step 4: Simplify right side
    66,063.90x = 3,574,631,435.29
  5. Step 5: Solve for x
    x = 3,574,631,435.29/66,063.90
  6. Step 6: Final answer
    x = 54,108.70

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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.