Home / 85,666.78-128,426.25-41,232.34

Finding the Fourth Proportional to 85,666.78, 128,426.25 and 41,232.34

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Solution

The fourth proportional to 85,666.78, 128,426.25 and 41,232.34 is: 61,812.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,666.78 : 128,426.25 = 41,232.34 : x
  2. Step 2: Convert to fraction form
    85,666.78/128,426.25 = 41,232.34/x
  3. Step 3: Cross multiply
    85,666.78x = 128,426.25 × 41,232.34
  4. Step 4: Simplify right side
    85,666.78x = 5,295,314,804.93
  5. Step 5: Solve for x
    x = 5,295,314,804.93/85,666.78
  6. Step 6: Final answer
    x = 61,812.93

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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.