Home / 86,840.31-130,192.43-34,289.13

Finding the Fourth Proportional to 86,840.31, 130,192.43 and 34,289.13

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Solution

The fourth proportional to 86,840.31, 130,192.43 and 34,289.13 is: 51,406.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,840.31 : 130,192.43 = 34,289.13 : x
  2. Step 2: Convert to fraction form
    86,840.31/130,192.43 = 34,289.13/x
  3. Step 3: Cross multiply
    86,840.31x = 130,192.43 × 34,289.13
  4. Step 4: Simplify right side
    86,840.31x = 4,464,184,985.84
  5. Step 5: Solve for x
    x = 4,464,184,985.84/86,840.31
  6. Step 6: Final answer
    x = 51,406.83

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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.