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Finding the Fourth Proportional to 53,328.50, 79,980.44 and 15,885.18

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Solution

The fourth proportional to 53,328.50, 79,980.44 and 15,885.18 is: 23,824.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,328.50 : 79,980.44 = 15,885.18 : x
  2. Step 2: Convert to fraction form
    53,328.50/79,980.44 = 15,885.18/x
  3. Step 3: Cross multiply
    53,328.50x = 79,980.44 × 15,885.18
  4. Step 4: Simplify right side
    53,328.50x = 1,270,503,685.88
  5. Step 5: Solve for x
    x = 1,270,503,685.88/53,328.50
  6. Step 6: Final answer
    x = 23,824.10

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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.