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Finding the Fourth Proportional to 83,673,007.80, 125,509,511.70 and 70,280,694.60

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Solution

The fourth proportional to 83,673,007.80, 125,509,511.70 and 70,280,694.60 is: 105,421,041.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,673,007.80 : 125,509,511.70 = 70,280,694.60 : x
  2. Step 2: Convert to fraction form
    83,673,007.80/125,509,511.70 = 70,280,694.60/x
  3. Step 3: Cross multiply
    83,673,007.80x = 125,509,511.70 × 70,280,694.60
  4. Step 4: Simplify right side
    83,673,007.80x = 8,820,895,661,182,826
  5. Step 5: Solve for x
    x = 8,820,895,661,182,826/83,673,007.80
  6. Step 6: Final answer
    x = 105,421,041.90

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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.