Home / 66,254.69-91,455.21-39,397.11

Finding the Fourth Proportional to 66,254.69, 91,455.21 and 39,397.11

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Solution

The fourth proportional to 66,254.69, 91,455.21 and 39,397.11 is: 54,382.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,254.69 : 91,455.21 = 39,397.11 : x
  2. Step 2: Convert to fraction form
    66,254.69/91,455.21 = 39,397.11/x
  3. Step 3: Cross multiply
    66,254.69x = 91,455.21 × 39,397.11
  4. Step 4: Simplify right side
    66,254.69x = 3,603,070,968.44
  5. Step 5: Solve for x
    x = 3,603,070,968.44/66,254.69
  6. Step 6: Final answer
    x = 54,382.13

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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.