Home / 66,108.66-91,199.43-39,235.92

Finding the Fourth Proportional to 66,108.66, 91,199.43 and 39,235.92

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Solution

The fourth proportional to 66,108.66, 91,199.43 and 39,235.92 is: 54,127.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,108.66 : 91,199.43 = 39,235.92 : x
  2. Step 2: Convert to fraction form
    66,108.66/91,199.43 = 39,235.92/x
  3. Step 3: Cross multiply
    66,108.66x = 91,199.43 × 39,235.92
  4. Step 4: Simplify right side
    66,108.66x = 3,578,293,539.53
  5. Step 5: Solve for x
    x = 3,578,293,539.53/66,108.66
  6. Step 6: Final answer
    x = 54,127.46

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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.