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Finding the Fourth Proportional to 98,428.95, 147,643.43 and 27,351.45

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Solution

The fourth proportional to 98,428.95, 147,643.43 and 27,351.45 is: 41,027.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,428.95 : 147,643.43 = 27,351.45 : x
  2. Step 2: Convert to fraction form
    98,428.95/147,643.43 = 27,351.45/x
  3. Step 3: Cross multiply
    98,428.95x = 147,643.43 × 27,351.45
  4. Step 4: Simplify right side
    98,428.95x = 4,038,261,756.72
  5. Step 5: Solve for x
    x = 4,038,261,756.72/98,428.95
  6. Step 6: Final answer
    x = 41,027.18

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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.