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Finding the Fourth Proportional to 98,571.65, 147,928.75 and 39,423.83

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Solution

The fourth proportional to 98,571.65, 147,928.75 and 39,423.83 is: 59,164.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,571.65 : 147,928.75 = 39,423.83 : x
  2. Step 2: Convert to fraction form
    98,571.65/147,928.75 = 39,423.83/x
  3. Step 3: Cross multiply
    98,571.65x = 147,928.75 × 39,423.83
  4. Step 4: Simplify right side
    98,571.65x = 5,831,917,053.91
  5. Step 5: Solve for x
    x = 5,831,917,053.91/98,571.65
  6. Step 6: Final answer
    x = 59,164.25

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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.