Home / 76,288,021.40-114,432,032.10-18,779,835.80

Finding the Fourth Proportional to 76,288,021.40, 114,432,032.10 and 18,779,835.80

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Solution

The fourth proportional to 76,288,021.40, 114,432,032.10 and 18,779,835.80 is: 28,169,753.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,288,021.40 : 114,432,032.10 = 18,779,835.80 : x
  2. Step 2: Convert to fraction form
    76,288,021.40/114,432,032.10 = 18,779,835.80/x
  3. Step 3: Cross multiply
    76,288,021.40x = 114,432,032.10 × 18,779,835.80
  4. Step 4: Simplify right side
    76,288,021.40x = 2,149,014,773,098,329.25
  5. Step 5: Solve for x
    x = 2,149,014,773,098,329.25/76,288,021.40
  6. Step 6: Final answer
    x = 28,169,753.70

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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.