Home / 28,072,915.20-42,109,372.80-9,879,918.30

Finding the Fourth Proportional to 28,072,915.20, 42,109,372.80 and 9,879,918.30

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Solution

The fourth proportional to 28,072,915.20, 42,109,372.80 and 9,879,918.30 is: 14,819,877.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,072,915.20 : 42,109,372.80 = 9,879,918.30 : x
  2. Step 2: Convert to fraction form
    28,072,915.20/42,109,372.80 = 9,879,918.30/x
  3. Step 3: Cross multiply
    28,072,915.20x = 42,109,372.80 × 9,879,918.30
  4. Step 4: Simplify right side
    28,072,915.20x = 416,037,162,928,242.25
  5. Step 5: Solve for x
    x = 416,037,162,928,242.25/28,072,915.20
  6. Step 6: Final answer
    x = 14,819,877.45

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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.