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Finding the Fourth Proportional to 70,328.67, 105,493.01 and 21,080.67

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Solution

The fourth proportional to 70,328.67, 105,493.01 and 21,080.67 is: 31,621.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,328.67 : 105,493.01 = 21,080.67 : x
  2. Step 2: Convert to fraction form
    70,328.67/105,493.01 = 21,080.67/x
  3. Step 3: Cross multiply
    70,328.67x = 105,493.01 × 21,080.67
  4. Step 4: Simplify right side
    70,328.67x = 2,223,863,482.80
  5. Step 5: Solve for x
    x = 2,223,863,482.80/70,328.67
  6. Step 6: Final answer
    x = 31,621.01

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.