Home / 86,038.12-128,998.18-43,836.52

Finding the Fourth Proportional to 86,038.12, 128,998.18 and 43,836.52

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Solution

The fourth proportional to 86,038.12, 128,998.18 and 43,836.52 is: 65,724.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,038.12 : 128,998.18 = 43,836.52 : x
  2. Step 2: Convert to fraction form
    86,038.12/128,998.18 = 43,836.52/x
  3. Step 3: Cross multiply
    86,038.12x = 128,998.18 × 43,836.52
  4. Step 4: Simplify right side
    86,038.12x = 5,654,831,297.53
  5. Step 5: Solve for x
    x = 5,654,831,297.53/86,038.12
  6. Step 6: Final answer
    x = 65,724.72

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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.