Home / 79,421.16-109,524.15-53,636.40

Finding the Fourth Proportional to 79,421.16, 109,524.15 and 53,636.40

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Solution

The fourth proportional to 79,421.16, 109,524.15 and 53,636.40 is: 73,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,421.16 : 109,524.15 = 53,636.40 : x
  2. Step 2: Convert to fraction form
    79,421.16/109,524.15 = 53,636.40/x
  3. Step 3: Cross multiply
    79,421.16x = 109,524.15 × 53,636.40
  4. Step 4: Simplify right side
    79,421.16x = 5,874,481,119.06
  5. Step 5: Solve for x
    x = 5,874,481,119.06/79,421.16
  6. Step 6: Final answer
    x = 73,966.20

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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.