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Finding the Fourth Proportional to 70,449.50, 97,220.40 and 38,619.56

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Solution

The fourth proportional to 70,449.50, 97,220.40 and 38,619.56 is: 53,295.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,449.50 : 97,220.40 = 38,619.56 : x
  2. Step 2: Convert to fraction form
    70,449.50/97,220.40 = 38,619.56/x
  3. Step 3: Cross multiply
    70,449.50x = 97,220.40 × 38,619.56
  4. Step 4: Simplify right side
    70,449.50x = 3,754,609,071.02
  5. Step 5: Solve for x
    x = 3,754,609,071.02/70,449.50
  6. Step 6: Final answer
    x = 53,295.04

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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.