Home / 39,312.51-54,215.71-25,878.80

Finding the Fourth Proportional to 39,312.51, 54,215.71 and 25,878.80

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Solution

The fourth proportional to 39,312.51, 54,215.71 and 25,878.80 is: 35,689.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,312.51 : 54,215.71 = 25,878.80 : x
  2. Step 2: Convert to fraction form
    39,312.51/54,215.71 = 25,878.80/x
  3. Step 3: Cross multiply
    39,312.51x = 54,215.71 × 25,878.80
  4. Step 4: Simplify right side
    39,312.51x = 1,403,037,180.17
  5. Step 5: Solve for x
    x = 1,403,037,180.17/39,312.51
  6. Step 6: Final answer
    x = 35,689.33

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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.