Home / 53,990.09-74,405.43-38,856.47

Finding the Fourth Proportional to 53,990.09, 74,405.43 and 38,856.47

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Solution

The fourth proportional to 53,990.09, 74,405.43 and 38,856.47 is: 53,549.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,990.09 : 74,405.43 = 38,856.47 : x
  2. Step 2: Convert to fraction form
    53,990.09/74,405.43 = 38,856.47/x
  3. Step 3: Cross multiply
    53,990.09x = 74,405.43 × 38,856.47
  4. Step 4: Simplify right side
    53,990.09x = 2,891,132,164.35
  5. Step 5: Solve for x
    x = 2,891,132,164.35/53,990.09
  6. Step 6: Final answer
    x = 53,549.32

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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.