Home / 78,760.02-108,690.96-48,138.08

Finding the Fourth Proportional to 78,760.02, 108,690.96 and 48,138.08

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Solution

The fourth proportional to 78,760.02, 108,690.96 and 48,138.08 is: 66,431.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,760.02 : 108,690.96 = 48,138.08 : x
  2. Step 2: Convert to fraction form
    78,760.02/108,690.96 = 48,138.08/x
  3. Step 3: Cross multiply
    78,760.02x = 108,690.96 × 48,138.08
  4. Step 4: Simplify right side
    78,760.02x = 5,232,174,127.76
  5. Step 5: Solve for x
    x = 5,232,174,127.76/78,760.02
  6. Step 6: Final answer
    x = 66,431.85

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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.