Home / 78,637.96-108,541.38-48,428.20

Finding the Fourth Proportional to 78,637.96, 108,541.38 and 48,428.20

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Solution

The fourth proportional to 78,637.96, 108,541.38 and 48,428.20 is: 66,843.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,637.96 : 108,541.38 = 48,428.20 : x
  2. Step 2: Convert to fraction form
    78,637.96/108,541.38 = 48,428.20/x
  3. Step 3: Cross multiply
    78,637.96x = 108,541.38 × 48,428.20
  4. Step 4: Simplify right side
    78,637.96x = 5,256,463,658.92
  5. Step 5: Solve for x
    x = 5,256,463,658.92/78,637.96
  6. Step 6: Final answer
    x = 66,843.85

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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.