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Finding the Fourth Proportional to 53,338.58, 79,920.21 and 18,259.10

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Solution

The fourth proportional to 53,338.58, 79,920.21 and 18,259.10 is: 27,358.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,338.58 : 79,920.21 = 18,259.10 : x
  2. Step 2: Convert to fraction form
    53,338.58/79,920.21 = 18,259.10/x
  3. Step 3: Cross multiply
    53,338.58x = 79,920.21 × 18,259.10
  4. Step 4: Simplify right side
    53,338.58x = 1,459,271,106.41
  5. Step 5: Solve for x
    x = 1,459,271,106.41/53,338.58
  6. Step 6: Final answer
    x = 27,358.64

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1.5x scale

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.