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Finding the Fourth Proportional to 51,240.40, 70,701 and 31,107.88

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Solution

The fourth proportional to 51,240.40, 70,701 and 31,107.88 is: 42,922.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,240.40 : 70,701 = 31,107.88 : x
  2. Step 2: Convert to fraction form
    51,240.40/70,701 = 31,107.88/x
  3. Step 3: Cross multiply
    51,240.40x = 70,701 × 31,107.88
  4. Step 4: Simplify right side
    51,240.40x = 2,199,358,223.88
  5. Step 5: Solve for x
    x = 2,199,358,223.88/51,240.40
  6. Step 6: Final answer
    x = 42,922.35

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.