Home / 82,130.40-113,344.38-48,139.56

Finding the Fourth Proportional to 82,130.40, 113,344.38 and 48,139.56

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Solution

The fourth proportional to 82,130.40, 113,344.38 and 48,139.56 is: 66,435.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,130.40 : 113,344.38 = 48,139.56 : x
  2. Step 2: Convert to fraction form
    82,130.40/113,344.38 = 48,139.56/x
  3. Step 3: Cross multiply
    82,130.40x = 113,344.38 × 48,139.56
  4. Step 4: Simplify right side
    82,130.40x = 5,456,348,581.67
  5. Step 5: Solve for x
    x = 5,456,348,581.67/82,130.40
  6. Step 6: Final answer
    x = 66,435.19

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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.