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Finding the Fourth Proportional to 70,975.40, 105,881.45 and 69,044.67

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Solution

The fourth proportional to 70,975.40, 105,881.45 and 69,044.67 is: 103,001.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,975.40 : 105,881.45 = 69,044.67 : x
  2. Step 2: Convert to fraction form
    70,975.40/105,881.45 = 69,044.67/x
  3. Step 3: Cross multiply
    70,975.40x = 105,881.45 × 69,044.67
  4. Step 4: Simplify right side
    70,975.40x = 7,310,549,429.15
  5. Step 5: Solve for x
    x = 7,310,549,429.15/70,975.40
  6. Step 6: Final answer
    x = 103,001.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.