Home / 39,943.83-55,083.09-30,988.05

Finding the Fourth Proportional to 39,943.83, 55,083.09 and 30,988.05

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Solution

The fourth proportional to 39,943.83, 55,083.09 and 30,988.05 is: 42,732.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,943.83 : 55,083.09 = 30,988.05 : x
  2. Step 2: Convert to fraction form
    39,943.83/55,083.09 = 30,988.05/x
  3. Step 3: Cross multiply
    39,943.83x = 55,083.09 × 30,988.05
  4. Step 4: Simplify right side
    39,943.83x = 1,706,917,547.07
  5. Step 5: Solve for x
    x = 1,706,917,547.07/39,943.83
  6. Step 6: Final answer
    x = 42,732.95

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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.