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Finding the Fourth Proportional to 53,407.72, 80,110.70 and 21,810.84

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Solution

The fourth proportional to 53,407.72, 80,110.70 and 21,810.84 is: 32,715.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,407.72 : 80,110.70 = 21,810.84 : x
  2. Step 2: Convert to fraction form
    53,407.72/80,110.70 = 21,810.84/x
  3. Step 3: Cross multiply
    53,407.72x = 80,110.70 × 21,810.84
  4. Step 4: Simplify right side
    53,407.72x = 1,747,281,659.99
  5. Step 5: Solve for x
    x = 1,747,281,659.99/53,407.72
  6. Step 6: Final answer
    x = 32,715.90

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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.