Home / 70,747.70-97,631.28-38,915.90

Finding the Fourth Proportional to 70,747.70, 97,631.28 and 38,915.90

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Solution

The fourth proportional to 70,747.70, 97,631.28 and 38,915.90 is: 53,703.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,747.70 : 97,631.28 = 38,915.90 : x
  2. Step 2: Convert to fraction form
    70,747.70/97,631.28 = 38,915.90/x
  3. Step 3: Cross multiply
    70,747.70x = 97,631.28 × 38,915.90
  4. Step 4: Simplify right side
    70,747.70x = 3,799,409,129.35
  5. Step 5: Solve for x
    x = 3,799,409,129.35/70,747.70
  6. Step 6: Final answer
    x = 53,703.64

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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.