Home / 57,765.12-79,715.88-31,269.12

Finding the Fourth Proportional to 57,765.12, 79,715.88 and 31,269.12

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Solution

The fourth proportional to 57,765.12, 79,715.88 and 31,269.12 is: 43,151.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,765.12 : 79,715.88 = 31,269.12 : x
  2. Step 2: Convert to fraction form
    57,765.12/79,715.88 = 31,269.12/x
  3. Step 3: Cross multiply
    57,765.12x = 79,715.88 × 31,269.12
  4. Step 4: Simplify right side
    57,765.12x = 2,492,645,417.63
  5. Step 5: Solve for x
    x = 2,492,645,417.63/57,765.12
  6. Step 6: Final answer
    x = 43,151.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.