Home / 85,943.67-128,762.96-35,913.48

Finding the Fourth Proportional to 85,943.67, 128,762.96 and 35,913.48

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Solution

The fourth proportional to 85,943.67, 128,762.96 and 35,913.48 is: 53,806.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,943.67 : 128,762.96 = 35,913.48 : x
  2. Step 2: Convert to fraction form
    85,943.67/128,762.96 = 35,913.48/x
  3. Step 3: Cross multiply
    85,943.67x = 128,762.96 × 35,913.48
  4. Step 4: Simplify right side
    85,943.67x = 4,624,325,809.13
  5. Step 5: Solve for x
    x = 4,624,325,809.13/85,943.67
  6. Step 6: Final answer
    x = 53,806.47

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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.