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Finding the Fourth Proportional to 53,482.32, 80,222.39 and 18,421.20

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Solution

The fourth proportional to 53,482.32, 80,222.39 and 18,421.20 is: 27,631.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,482.32 : 80,222.39 = 18,421.20 : x
  2. Step 2: Convert to fraction form
    53,482.32/80,222.39 = 18,421.20/x
  3. Step 3: Cross multiply
    53,482.32x = 80,222.39 × 18,421.20
  4. Step 4: Simplify right side
    53,482.32x = 1,477,792,690.67
  5. Step 5: Solve for x
    x = 1,477,792,690.67/53,482.32
  6. Step 6: Final answer
    x = 27,631.42

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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.