Home / 53,287,915.20-79,931,872.80-12,898,399.20

Finding the Fourth Proportional to 53,287,915.20, 79,931,872.80 and 12,898,399.20

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Solution

The fourth proportional to 53,287,915.20, 79,931,872.80 and 12,898,399.20 is: 19,347,598.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,287,915.20 : 79,931,872.80 = 12,898,399.20 : x
  2. Step 2: Convert to fraction form
    53,287,915.20/79,931,872.80 = 12,898,399.20/x
  3. Step 3: Cross multiply
    53,287,915.20x = 79,931,872.80 × 12,898,399.20
  4. Step 4: Simplify right side
    53,287,915.20x = 1,030,993,204,178,021.62
  5. Step 5: Solve for x
    x = 1,030,993,204,178,021.62/53,287,915.20
  6. Step 6: Final answer
    x = 19,347,598.80

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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.