Home / 72,966.15-109,475.64-28,623.21

Finding the Fourth Proportional to 72,966.15, 109,475.64 and 28,623.21

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Solution

The fourth proportional to 72,966.15, 109,475.64 and 28,623.21 is: 42,945.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,966.15 : 109,475.64 = 28,623.21 : x
  2. Step 2: Convert to fraction form
    72,966.15/109,475.64 = 28,623.21/x
  3. Step 3: Cross multiply
    72,966.15x = 109,475.64 × 28,623.21
  4. Step 4: Simplify right side
    72,966.15x = 3,133,544,233.60
  5. Step 5: Solve for x
    x = 3,133,544,233.60/72,966.15
  6. Step 6: Final answer
    x = 42,945.18

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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.