Home / 66,970.08-100,455.84-20,223.36

Finding the Fourth Proportional to 66,970.08, 100,455.84 and 20,223.36

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Solution

The fourth proportional to 66,970.08, 100,455.84 and 20,223.36 is: 30,335.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,970.08 : 100,455.84 = 20,223.36 : x
  2. Step 2: Convert to fraction form
    66,970.08/100,455.84 = 20,223.36/x
  3. Step 3: Cross multiply
    66,970.08x = 100,455.84 × 20,223.36
  4. Step 4: Simplify right side
    66,970.08x = 2,031,554,616.42
  5. Step 5: Solve for x
    x = 2,031,554,616.42/66,970.08
  6. Step 6: Final answer
    x = 30,335.26

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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.