Home / 30,207,891.60-45,311,837.40-8,643,196.80

Finding the Fourth Proportional to 30,207,891.60, 45,311,837.40 and 8,643,196.80

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Solution

The fourth proportional to 30,207,891.60, 45,311,837.40 and 8,643,196.80 is: 12,964,795.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,207,891.60 : 45,311,837.40 = 8,643,196.80 : x
  2. Step 2: Convert to fraction form
    30,207,891.60/45,311,837.40 = 8,643,196.80/x
  3. Step 3: Cross multiply
    30,207,891.60x = 45,311,837.40 × 8,643,196.80
  4. Step 4: Simplify right side
    30,207,891.60x = 391,639,128,017,800.31
  5. Step 5: Solve for x
    x = 391,639,128,017,800.31/30,207,891.60
  6. Step 6: Final answer
    x = 12,964,795.20

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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.