Home / 53,812.79-80,715.93-20,072.31

Finding the Fourth Proportional to 53,812.79, 80,715.93 and 20,072.31

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Solution

The fourth proportional to 53,812.79, 80,715.93 and 20,072.31 is: 30,107.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,812.79 : 80,715.93 = 20,072.31 : x
  2. Step 2: Convert to fraction form
    53,812.79/80,715.93 = 20,072.31/x
  3. Step 3: Cross multiply
    53,812.79x = 80,715.93 × 20,072.31
  4. Step 4: Simplify right side
    53,812.79x = 1,620,154,904.45
  5. Step 5: Solve for x
    x = 1,620,154,904.45/53,812.79
  6. Step 6: Final answer
    x = 30,107.24

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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.