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Finding the Fourth Proportional to 53,280.88, 79,934.48 and 15,840.79

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Solution

The fourth proportional to 53,280.88, 79,934.48 and 15,840.79 is: 23,765.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,280.88 : 79,934.48 = 15,840.79 : x
  2. Step 2: Convert to fraction form
    53,280.88/79,934.48 = 15,840.79/x
  3. Step 3: Cross multiply
    53,280.88x = 79,934.48 × 15,840.79
  4. Step 4: Simplify right side
    53,280.88x = 1,266,225,311.44
  5. Step 5: Solve for x
    x = 1,266,225,311.44/53,280.88
  6. Step 6: Final answer
    x = 23,765.10

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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.