Home / 85,594.21-128,321.75-35,711.48

Finding the Fourth Proportional to 85,594.21, 128,321.75 and 35,711.48

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Solution

The fourth proportional to 85,594.21, 128,321.75 and 35,711.48 is: 53,538.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,594.21 : 128,321.75 = 35,711.48 : x
  2. Step 2: Convert to fraction form
    85,594.21/128,321.75 = 35,711.48/x
  3. Step 3: Cross multiply
    85,594.21x = 128,321.75 × 35,711.48
  4. Step 4: Simplify right side
    85,594.21x = 4,582,559,056.36
  5. Step 5: Solve for x
    x = 4,582,559,056.36/85,594.21
  6. Step 6: Final answer
    x = 53,538.19

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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.