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Finding the Fourth Proportional to 53,245.60, 79,868.40 and 13,802.40

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Solution

The fourth proportional to 53,245.60, 79,868.40 and 13,802.40 is: 20,703.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,245.60 : 79,868.40 = 13,802.40 : x
  2. Step 2: Convert to fraction form
    53,245.60/79,868.40 = 13,802.40/x
  3. Step 3: Cross multiply
    53,245.60x = 79,868.40 × 13,802.40
  4. Step 4: Simplify right side
    53,245.60x = 1,102,375,604.16
  5. Step 5: Solve for x
    x = 1,102,375,604.16/53,245.60
  6. Step 6: Final answer
    x = 20,703.60

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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.