Home / 86,208.90-129,320.64-23,038.62

Finding the Fourth Proportional to 86,208.90, 129,320.64 and 23,038.62

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Solution

The fourth proportional to 86,208.90, 129,320.64 and 23,038.62 is: 34,559.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,208.90 : 129,320.64 = 23,038.62 : x
  2. Step 2: Convert to fraction form
    86,208.90/129,320.64 = 23,038.62/x
  3. Step 3: Cross multiply
    86,208.90x = 129,320.64 × 23,038.62
  4. Step 4: Simplify right side
    86,208.90x = 2,979,369,083.12
  5. Step 5: Solve for x
    x = 2,979,369,083.12/86,208.90
  6. Step 6: Final answer
    x = 34,559.88

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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.