Home / 70,258.02-105,392.52-20,338.86

Finding the Fourth Proportional to 70,258.02, 105,392.52 and 20,338.86

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Solution

The fourth proportional to 70,258.02, 105,392.52 and 20,338.86 is: 30,509.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,258.02 : 105,392.52 = 20,338.86 : x
  2. Step 2: Convert to fraction form
    70,258.02/105,392.52 = 20,338.86/x
  3. Step 3: Cross multiply
    70,258.02x = 105,392.52 × 20,338.86
  4. Step 4: Simplify right side
    70,258.02x = 2,143,563,709.33
  5. Step 5: Solve for x
    x = 2,143,563,709.33/70,258.02
  6. Step 6: Final answer
    x = 30,509.88

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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.