Home / 28,115,820.80-42,173,731.20-16,778,412.80

Finding the Fourth Proportional to 28,115,820.80, 42,173,731.20 and 16,778,412.80

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Solution

The fourth proportional to 28,115,820.80, 42,173,731.20 and 16,778,412.80 is: 25,167,619.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115,820.80 : 42,173,731.20 = 16,778,412.80 : x
  2. Step 2: Convert to fraction form
    28,115,820.80/42,173,731.20 = 16,778,412.80/x
  3. Step 3: Cross multiply
    28,115,820.80x = 42,173,731.20 × 16,778,412.80
  4. Step 4: Simplify right side
    28,115,820.80x = 707,608,271,389,839.50
  5. Step 5: Solve for x
    x = 707,608,271,389,839.50/28,115,820.80
  6. Step 6: Final answer
    x = 25,167,619.20

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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.