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Finding the Fourth Proportional to 70,528.48, 105,799.53 and 20,607.44

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Solution

The fourth proportional to 70,528.48, 105,799.53 and 20,607.44 is: 30,913.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,528.48 : 105,799.53 = 20,607.44 : x
  2. Step 2: Convert to fraction form
    70,528.48/105,799.53 = 20,607.44/x
  3. Step 3: Cross multiply
    70,528.48x = 105,799.53 × 20,607.44
  4. Step 4: Simplify right side
    70,528.48x = 2,180,257,014.78
  5. Step 5: Solve for x
    x = 2,180,257,014.78/70,528.48
  6. Step 6: Final answer
    x = 30,913.14

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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.