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Finding the Fourth Proportional to 47,281.40, 70,922.10 and 43,126.10

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Solution

The fourth proportional to 47,281.40, 70,922.10 and 43,126.10 is: 64,689.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,281.40 : 70,922.10 = 43,126.10 : x
  2. Step 2: Convert to fraction form
    47,281.40/70,922.10 = 43,126.10/x
  3. Step 3: Cross multiply
    47,281.40x = 70,922.10 × 43,126.10
  4. Step 4: Simplify right side
    47,281.40x = 3,058,593,576.81
  5. Step 5: Solve for x
    x = 3,058,593,576.81/47,281.40
  6. Step 6: Final answer
    x = 64,689.15

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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.