Home / 85,829.57-128,712.69-29,655.26

Finding the Fourth Proportional to 85,829.57, 128,712.69 and 29,655.26

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Solution

The fourth proportional to 85,829.57, 128,712.69 and 29,655.26 is: 44,471.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,829.57 : 128,712.69 = 29,655.26 : x
  2. Step 2: Convert to fraction form
    85,829.57/128,712.69 = 29,655.26/x
  3. Step 3: Cross multiply
    85,829.57x = 128,712.69 × 29,655.26
  4. Step 4: Simplify right side
    85,829.57x = 3,817,007,643.69
  5. Step 5: Solve for x
    x = 3,817,007,643.69/85,829.57
  6. Step 6: Final answer
    x = 44,471.94

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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.