Home / 80,903.32-121,409.65-28,313.26

Finding the Fourth Proportional to 80,903.32, 121,409.65 and 28,313.26

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Solution

The fourth proportional to 80,903.32, 121,409.65 and 28,313.26 is: 42,489.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,903.32 : 121,409.65 = 28,313.26 : x
  2. Step 2: Convert to fraction form
    80,903.32/121,409.65 = 28,313.26/x
  3. Step 3: Cross multiply
    80,903.32x = 121,409.65 × 28,313.26
  4. Step 4: Simplify right side
    80,903.32x = 3,437,502,986.96
  5. Step 5: Solve for x
    x = 3,437,502,986.96/80,903.32
  6. Step 6: Final answer
    x = 42,489.02

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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.