Home / 147,620.79-221,466.35-47,781

Finding the Fourth Proportional to 147,620.79, 221,466.35 and 47,781

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Solution

The fourth proportional to 147,620.79, 221,466.35 and 47,781 is: 71,682.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,620.79 : 221,466.35 = 47,781 : x
  2. Step 2: Convert to fraction form
    147,620.79/221,466.35 = 47,781/x
  3. Step 3: Cross multiply
    147,620.79x = 221,466.35 × 47,781
  4. Step 4: Simplify right side
    147,620.79x = 10,581,883,430.45
  5. Step 5: Solve for x
    x = 10,581,883,430.45/147,620.79
  6. Step 6: Final answer
    x = 71,682.88

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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.