Home / 53,140.95-79,720.02-15,704.78

Finding the Fourth Proportional to 53,140.95, 79,720.02 and 15,704.78

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Solution

The fourth proportional to 53,140.95, 79,720.02 and 15,704.78 is: 23,559.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,140.95 : 79,720.02 = 15,704.78 : x
  2. Step 2: Convert to fraction form
    53,140.95/79,720.02 = 15,704.78/x
  3. Step 3: Cross multiply
    53,140.95x = 79,720.02 × 15,704.78
  4. Step 4: Simplify right side
    53,140.95x = 1,251,984,977.10
  5. Step 5: Solve for x
    x = 1,251,984,977.10/53,140.95
  6. Step 6: Final answer
    x = 23,559.70

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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.