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Finding the Fourth Proportional to 53,653.68, 80,407.62 and 20,355.84

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Solution

The fourth proportional to 53,653.68, 80,407.62 and 20,355.84 is: 30,506.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,653.68 : 80,407.62 = 20,355.84 : x
  2. Step 2: Convert to fraction form
    53,653.68/80,407.62 = 20,355.84/x
  3. Step 3: Cross multiply
    53,653.68x = 80,407.62 × 20,355.84
  4. Step 4: Simplify right side
    53,653.68x = 1,636,764,647.50
  5. Step 5: Solve for x
    x = 1,636,764,647.50/53,653.68
  6. Step 6: Final answer
    x = 30,506.10

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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.