Home / 81,685.10-112,731.42-45,877.22

Finding the Fourth Proportional to 81,685.10, 112,731.42 and 45,877.22

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Solution

The fourth proportional to 81,685.10, 112,731.42 and 45,877.22 is: 63,313.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,685.10 : 112,731.42 = 45,877.22 : x
  2. Step 2: Convert to fraction form
    81,685.10/112,731.42 = 45,877.22/x
  3. Step 3: Cross multiply
    81,685.10x = 112,731.42 × 45,877.22
  4. Step 4: Simplify right side
    81,685.10x = 5,171,804,156.25
  5. Step 5: Solve for x
    x = 5,171,804,156.25/81,685.10
  6. Step 6: Final answer
    x = 63,313.92

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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.