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Finding the Fourth Proportional to 81,213.31, 112,075.08 and 44,912.87

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Solution

The fourth proportional to 81,213.31, 112,075.08 and 44,912.87 is: 61,980.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,213.31 : 112,075.08 = 44,912.87 : x
  2. Step 2: Convert to fraction form
    81,213.31/112,075.08 = 44,912.87/x
  3. Step 3: Cross multiply
    81,213.31x = 112,075.08 × 44,912.87
  4. Step 4: Simplify right side
    81,213.31x = 5,033,613,498.28
  5. Step 5: Solve for x
    x = 5,033,613,498.28/81,213.31
  6. Step 6: Final answer
    x = 61,980.15

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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.