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Finding the Fourth Proportional to 35,302.79, 48,722.96 and 21,156.95

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Solution

The fourth proportional to 35,302.79, 48,722.96 and 21,156.95 is: 29,199.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,302.79 : 48,722.96 = 21,156.95 : x
  2. Step 2: Convert to fraction form
    35,302.79/48,722.96 = 21,156.95/x
  3. Step 3: Cross multiply
    35,302.79x = 48,722.96 × 21,156.95
  4. Step 4: Simplify right side
    35,302.79x = 1,030,829,403.27
  5. Step 5: Solve for x
    x = 1,030,829,403.27/35,302.79
  6. Step 6: Final answer
    x = 29,199.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.