Home / 85,426.16-128,162.64-41,090

Finding the Fourth Proportional to 85,426.16, 128,162.64 and 41,090

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Solution

The fourth proportional to 85,426.16, 128,162.64 and 41,090 is: 61,646.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,426.16 : 128,162.64 = 41,090 : x
  2. Step 2: Convert to fraction form
    85,426.16/128,162.64 = 41,090/x
  3. Step 3: Cross multiply
    85,426.16x = 128,162.64 × 41,090
  4. Step 4: Simplify right side
    85,426.16x = 5,266,202,877.60
  5. Step 5: Solve for x
    x = 5,266,202,877.60/85,426.16
  6. Step 6: Final answer
    x = 61,646.26

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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.