Home / 85,112.22-127,688.58-42,888.54

Finding the Fourth Proportional to 85,112.22, 127,688.58 and 42,888.54

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Solution

The fourth proportional to 85,112.22, 127,688.58 and 42,888.54 is: 64,343.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,112.22 : 127,688.58 = 42,888.54 : x
  2. Step 2: Convert to fraction form
    85,112.22/127,688.58 = 42,888.54/x
  3. Step 3: Cross multiply
    85,112.22x = 127,688.58 × 42,888.54
  4. Step 4: Simplify right side
    85,112.22x = 5,476,376,770.87
  5. Step 5: Solve for x
    x = 5,476,376,770.87/85,112.22
  6. Step 6: Final answer
    x = 64,343.01

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1.5x scale

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.