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Finding the Fourth Proportional to 53,835.40, 80,703.42 and 28,892.92

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Solution

The fourth proportional to 53,835.40, 80,703.42 and 28,892.92 is: 43,312.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,835.40 : 80,703.42 = 28,892.92 : x
  2. Step 2: Convert to fraction form
    53,835.40/80,703.42 = 28,892.92/x
  3. Step 3: Cross multiply
    53,835.40x = 80,703.42 × 28,892.92
  4. Step 4: Simplify right side
    53,835.40x = 2,331,757,457.79
  5. Step 5: Solve for x
    x = 2,331,757,457.79/53,835.40
  6. Step 6: Final answer
    x = 43,312.72

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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.