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Finding the Fourth Proportional to 70,956,003.20, 106,434,004.80 and 40,638,934.40

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Solution

The fourth proportional to 70,956,003.20, 106,434,004.80 and 40,638,934.40 is: 60,958,401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,956,003.20 : 106,434,004.80 = 40,638,934.40 : x
  2. Step 2: Convert to fraction form
    70,956,003.20/106,434,004.80 = 40,638,934.40/x
  3. Step 3: Cross multiply
    70,956,003.20x = 106,434,004.80 × 40,638,934.40
  4. Step 4: Simplify right side
    70,956,003.20x = 4,325,364,538,996,485
  5. Step 5: Solve for x
    x = 4,325,364,538,996,485/70,956,003.20
  6. Step 6: Final answer
    x = 60,958,401.60

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1.5x scale

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.