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Finding the Fourth Proportional to 70,687.57, 97,457.89 and 57,893.62

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Solution

The fourth proportional to 70,687.57, 97,457.89 and 57,893.62 is: 79,818.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,687.57 : 97,457.89 = 57,893.62 : x
  2. Step 2: Convert to fraction form
    70,687.57/97,457.89 = 57,893.62/x
  3. Step 3: Cross multiply
    70,687.57x = 97,457.89 × 57,893.62
  4. Step 4: Simplify right side
    70,687.57x = 5,642,190,049.66
  5. Step 5: Solve for x
    x = 5,642,190,049.66/70,687.57
  6. Step 6: Final answer
    x = 79,818.70

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1.5x scale

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.