Home / 28,085,845.20-42,128,767.80-25,986,325.20

Finding the Fourth Proportional to 28,085,845.20, 42,128,767.80 and 25,986,325.20

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Solution

The fourth proportional to 28,085,845.20, 42,128,767.80 and 25,986,325.20 is: 38,979,487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085,845.20 : 42,128,767.80 = 25,986,325.20 : x
  2. Step 2: Convert to fraction form
    28,085,845.20/42,128,767.80 = 25,986,325.20/x
  3. Step 3: Cross multiply
    28,085,845.20x = 42,128,767.80 × 25,986,325.20
  4. Step 4: Simplify right side
    28,085,845.20x = 1,094,771,860,326,088.50
  5. Step 5: Solve for x
    x = 1,094,771,860,326,088.50/28,085,845.20
  6. Step 6: Final answer
    x = 38,979,487.80

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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.