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Finding the Fourth Proportional to 70,127,998.80, 105,191,998.20 and 45,941,528.40

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Solution

The fourth proportional to 70,127,998.80, 105,191,998.20 and 45,941,528.40 is: 68,912,292.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,127,998.80 : 105,191,998.20 = 45,941,528.40 : x
  2. Step 2: Convert to fraction form
    70,127,998.80/105,191,998.20 = 45,941,528.40/x
  3. Step 3: Cross multiply
    70,127,998.80x = 105,191,998.20 × 45,941,528.40
  4. Step 4: Simplify right side
    70,127,998.80x = 4,832,681,172,758,049
  5. Step 5: Solve for x
    x = 4,832,681,172,758,049/70,127,998.80
  6. Step 6: Final answer
    x = 68,912,292.60

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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.