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Finding the Fourth Proportional to 70,352,584.80, 105,553,760.40 and 67,864,264.80

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Solution

The fourth proportional to 70,352,584.80, 105,553,760.40 and 67,864,264.80 is: 101,820,400.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,352,584.80 : 105,553,760.40 = 67,864,264.80 : x
  2. Step 2: Convert to fraction form
    70,352,584.80/105,553,760.40 = 67,864,264.80/x
  3. Step 3: Cross multiply
    70,352,584.80x = 105,553,760.40 × 67,864,264.80
  4. Step 4: Simplify right side
    70,352,584.80x = 7,163,328,346,421,354
  5. Step 5: Solve for x
    x = 7,163,328,346,421,354/70,352,584.80
  6. Step 6: Final answer
    x = 101,820,400.30

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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.