Home / 57,012.13-78,676.86-31,861.63

Finding the Fourth Proportional to 57,012.13, 78,676.86 and 31,861.63

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Solution

The fourth proportional to 57,012.13, 78,676.86 and 31,861.63 is: 43,969.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,012.13 : 78,676.86 = 31,861.63 : x
  2. Step 2: Convert to fraction form
    57,012.13/78,676.86 = 31,861.63/x
  3. Step 3: Cross multiply
    57,012.13x = 78,676.86 × 31,861.63
  4. Step 4: Simplify right side
    57,012.13x = 2,506,773,002.88
  5. Step 5: Solve for x
    x = 2,506,773,002.88/57,012.13
  6. Step 6: Final answer
    x = 43,969.12

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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.