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Finding the Fourth Proportional to 70,744.89, 97,628.18 and 38,915.81

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Solution

The fourth proportional to 70,744.89, 97,628.18 and 38,915.81 is: 53,703.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,744.89 : 97,628.18 = 38,915.81 : x
  2. Step 2: Convert to fraction form
    70,744.89/97,628.18 = 38,915.81/x
  3. Step 3: Cross multiply
    70,744.89x = 97,628.18 × 38,915.81
  4. Step 4: Simplify right side
    70,744.89x = 3,799,279,020.81
  5. Step 5: Solve for x
    x = 3,799,279,020.81/70,744.89
  6. Step 6: Final answer
    x = 53,703.94

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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.