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Finding the Fourth Proportional to 70,668,311.60, 105,871,830.60 and 40,285,924.40

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Solution

The fourth proportional to 70,668,311.60, 105,871,830.60 and 40,285,924.40 is: 60,354,414.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,668,311.60 : 105,871,830.60 = 40,285,924.40 : x
  2. Step 2: Convert to fraction form
    70,668,311.60/105,871,830.60 = 40,285,924.40/x
  3. Step 3: Cross multiply
    70,668,311.60x = 105,871,830.60 × 40,285,924.40
  4. Step 4: Simplify right side
    70,668,311.60x = 4,265,144,563,641,206
  5. Step 5: Solve for x
    x = 4,265,144,563,641,206/70,668,311.60
  6. Step 6: Final answer
    x = 60,354,414.41

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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.