Home / 98,428.37-147,666.05-31,868.55

Finding the Fourth Proportional to 98,428.37, 147,666.05 and 31,868.55

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Solution

The fourth proportional to 98,428.37, 147,666.05 and 31,868.55 is: 47,810.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,428.37 : 147,666.05 = 31,868.55 : x
  2. Step 2: Convert to fraction form
    98,428.37/147,666.05 = 31,868.55/x
  3. Step 3: Cross multiply
    98,428.37x = 147,666.05 × 31,868.55
  4. Step 4: Simplify right side
    98,428.37x = 4,705,902,738.38
  5. Step 5: Solve for x
    x = 4,705,902,738.38/98,428.37
  6. Step 6: Final answer
    x = 47,810.43

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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.