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Finding the Fourth Proportional to 47,206.40, 70,809.60 and 20,883.20

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Solution

The fourth proportional to 47,206.40, 70,809.60 and 20,883.20 is: 31,324.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,206.40 : 70,809.60 = 20,883.20 : x
  2. Step 2: Convert to fraction form
    47,206.40/70,809.60 = 20,883.20/x
  3. Step 3: Cross multiply
    47,206.40x = 70,809.60 × 20,883.20
  4. Step 4: Simplify right side
    47,206.40x = 1,478,731,038.72
  5. Step 5: Solve for x
    x = 1,478,731,038.72/47,206.40
  6. Step 6: Final answer
    x = 31,324.80

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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.