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Finding the Fourth Proportional to 81,737.02, 112,807.51 and 49,899.10

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Solution

The fourth proportional to 81,737.02, 112,807.51 and 49,899.10 is: 68,867.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,737.02 : 112,807.51 = 49,899.10 : x
  2. Step 2: Convert to fraction form
    81,737.02/112,807.51 = 49,899.10/x
  3. Step 3: Cross multiply
    81,737.02x = 112,807.51 × 49,899.10
  4. Step 4: Simplify right side
    81,737.02x = 5,628,993,222.24
  5. Step 5: Solve for x
    x = 5,628,993,222.24/81,737.02
  6. Step 6: Final answer
    x = 68,867.12

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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.