Home / 85,505.63-128,203.16-46,091.03

Finding the Fourth Proportional to 85,505.63, 128,203.16 and 46,091.03

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Solution

The fourth proportional to 85,505.63, 128,203.16 and 46,091.03 is: 69,106.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,505.63 : 128,203.16 = 46,091.03 : x
  2. Step 2: Convert to fraction form
    85,505.63/128,203.16 = 46,091.03/x
  3. Step 3: Cross multiply
    85,505.63x = 128,203.16 × 46,091.03
  4. Step 4: Simplify right side
    85,505.63x = 5,909,014,822.18
  5. Step 5: Solve for x
    x = 5,909,014,822.18/85,505.63
  6. Step 6: Final answer
    x = 69,106.74

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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.