Home / 98,038.49-146,986.05-31,440.71

Finding the Fourth Proportional to 98,038.49, 146,986.05 and 31,440.71

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Solution

The fourth proportional to 98,038.49, 146,986.05 and 31,440.71 is: 47,138.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,038.49 : 146,986.05 = 31,440.71 : x
  2. Step 2: Convert to fraction form
    98,038.49/146,986.05 = 31,440.71/x
  3. Step 3: Cross multiply
    98,038.49x = 146,986.05 × 31,440.71
  4. Step 4: Simplify right side
    98,038.49x = 4,621,345,772.10
  5. Step 5: Solve for x
    x = 4,621,345,772.10/98,038.49
  6. Step 6: Final answer
    x = 47,138.08

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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.