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Finding the Fourth Proportional to 70,644.48, 97,488 and 38,812.56

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Solution

The fourth proportional to 70,644.48, 97,488 and 38,812.56 is: 53,560.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,644.48 : 97,488 = 38,812.56 : x
  2. Step 2: Convert to fraction form
    70,644.48/97,488 = 38,812.56/x
  3. Step 3: Cross multiply
    70,644.48x = 97,488 × 38,812.56
  4. Step 4: Simplify right side
    70,644.48x = 3,783,758,849.28
  5. Step 5: Solve for x
    x = 3,783,758,849.28/70,644.48
  6. Step 6: Final answer
    x = 53,560.57

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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.