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Finding the Fourth Proportional to 85,472.58, 117,902.84 and 51,457.44

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Solution

The fourth proportional to 85,472.58, 117,902.84 and 51,457.44 is: 70,981.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,472.58 : 117,902.84 = 51,457.44 : x
  2. Step 2: Convert to fraction form
    85,472.58/117,902.84 = 51,457.44/x
  3. Step 3: Cross multiply
    85,472.58x = 117,902.84 × 51,457.44
  4. Step 4: Simplify right side
    85,472.58x = 6,066,978,057.84
  5. Step 5: Solve for x
    x = 6,066,978,057.84/85,472.58
  6. Step 6: Final answer
    x = 70,981.57

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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.