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Finding the Fourth Proportional to 53,905.30, 80,663.55 and 36,409.30

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Solution

The fourth proportional to 53,905.30, 80,663.55 and 36,409.30 is: 54,482.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,905.30 : 80,663.55 = 36,409.30 : x
  2. Step 2: Convert to fraction form
    53,905.30/80,663.55 = 36,409.30/x
  3. Step 3: Cross multiply
    53,905.30x = 80,663.55 × 36,409.30
  4. Step 4: Simplify right side
    53,905.30x = 2,936,903,391.02
  5. Step 5: Solve for x
    x = 2,936,903,391.02/53,905.30
  6. Step 6: Final answer
    x = 54,482.65

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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.