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Finding the Fourth Proportional to 70,065,795.70, 105,098,693.55 and 40,889,684.80

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Solution

The fourth proportional to 70,065,795.70, 105,098,693.55 and 40,889,684.80 is: 61,334,527.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,065,795.70 : 105,098,693.55 = 40,889,684.80 : x
  2. Step 2: Convert to fraction form
    70,065,795.70/105,098,693.55 = 40,889,684.80/x
  3. Step 3: Cross multiply
    70,065,795.70x = 105,098,693.55 × 40,889,684.80
  4. Step 4: Simplify right side
    70,065,795.70x = 4,297,452,452,151,292.50
  5. Step 5: Solve for x
    x = 4,297,452,452,151,292.50/70,065,795.70
  6. Step 6: Final answer
    x = 61,334,527.20

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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.