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Finding the Fourth Proportional to 35,457.60, 48,931.62 and 21,310.68

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Solution

The fourth proportional to 35,457.60, 48,931.62 and 21,310.68 is: 29,408.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,457.60 : 48,931.62 = 21,310.68 : x
  2. Step 2: Convert to fraction form
    35,457.60/48,931.62 = 21,310.68/x
  3. Step 3: Cross multiply
    35,457.60x = 48,931.62 × 21,310.68
  4. Step 4: Simplify right side
    35,457.60x = 1,042,766,095.70
  5. Step 5: Solve for x
    x = 1,042,766,095.70/35,457.60
  6. Step 6: Final answer
    x = 29,408.82

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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.