Home / 85,075.35-127,664.66-31,806.10

Finding the Fourth Proportional to 85,075.35, 127,664.66 and 31,806.10

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Solution

The fourth proportional to 85,075.35, 127,664.66 and 31,806.10 is: 47,728.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,075.35 : 127,664.66 = 31,806.10 : x
  2. Step 2: Convert to fraction form
    85,075.35/127,664.66 = 31,806.10/x
  3. Step 3: Cross multiply
    85,075.35x = 127,664.66 × 31,806.10
  4. Step 4: Simplify right side
    85,075.35x = 4,060,514,942.43
  5. Step 5: Solve for x
    x = 4,060,514,942.43/85,075.35
  6. Step 6: Final answer
    x = 47,728.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.