Home / 66,175.62-91,312.65-39,319.26

Finding the Fourth Proportional to 66,175.62, 91,312.65 and 39,319.26

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Solution

The fourth proportional to 66,175.62, 91,312.65 and 39,319.26 is: 54,254.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,175.62 : 91,312.65 = 39,319.26 : x
  2. Step 2: Convert to fraction form
    66,175.62/91,312.65 = 39,319.26/x
  3. Step 3: Cross multiply
    66,175.62x = 91,312.65 × 39,319.26
  4. Step 4: Simplify right side
    66,175.62x = 3,590,345,826.64
  5. Step 5: Solve for x
    x = 3,590,345,826.64/66,175.62
  6. Step 6: Final answer
    x = 54,254.81

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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.