Home / 85,580.28-128,282.92-29,403.54

Finding the Fourth Proportional to 85,580.28, 128,282.92 and 29,403.54

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Solution

The fourth proportional to 85,580.28, 128,282.92 and 29,403.54 is: 44,075.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,580.28 : 128,282.92 = 29,403.54 : x
  2. Step 2: Convert to fraction form
    85,580.28/128,282.92 = 29,403.54/x
  3. Step 3: Cross multiply
    85,580.28x = 128,282.92 × 29,403.54
  4. Step 4: Simplify right side
    85,580.28x = 3,771,971,969.54
  5. Step 5: Solve for x
    x = 3,771,971,969.54/85,580.28
  6. Step 6: Final answer
    x = 44,075.25

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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.