Home / 53,335.04-79,979.52-20,480

Finding the Fourth Proportional to 53,335.04, 79,979.52 and 20,480

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Solution

The fourth proportional to 53,335.04, 79,979.52 and 20,480 is: 30,711.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,335.04 : 79,979.52 = 20,480 : x
  2. Step 2: Convert to fraction form
    53,335.04/79,979.52 = 20,480/x
  3. Step 3: Cross multiply
    53,335.04x = 79,979.52 × 20,480
  4. Step 4: Simplify right side
    53,335.04x = 1,637,980,569.60
  5. Step 5: Solve for x
    x = 1,637,980,569.60/53,335.04
  6. Step 6: Final answer
    x = 30,711.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.