Home / 53,636.20-74,021.18-30,979.32

Finding the Fourth Proportional to 53,636.20, 74,021.18 and 30,979.32

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Solution

The fourth proportional to 53,636.20, 74,021.18 and 30,979.32 is: 42,753.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,636.20 : 74,021.18 = 30,979.32 : x
  2. Step 2: Convert to fraction form
    53,636.20/74,021.18 = 30,979.32/x
  3. Step 3: Cross multiply
    53,636.20x = 74,021.18 × 30,979.32
  4. Step 4: Simplify right side
    53,636.20x = 2,293,125,822.00
  5. Step 5: Solve for x
    x = 2,293,125,822.00/53,636.20
  6. Step 6: Final answer
    x = 42,753.32

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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.