Home / 76,288,018.40-114,432,027.60-18,779,832.80

Finding the Fourth Proportional to 76,288,018.40, 114,432,027.60 and 18,779,832.80

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Solution

The fourth proportional to 76,288,018.40, 114,432,027.60 and 18,779,832.80 is: 28,169,749.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,288,018.40 : 114,432,027.60 = 18,779,832.80 : x
  2. Step 2: Convert to fraction form
    76,288,018.40/114,432,027.60 = 18,779,832.80/x
  3. Step 3: Cross multiply
    76,288,018.40x = 114,432,027.60 × 18,779,832.80
  4. Step 4: Simplify right side
    76,288,018.40x = 2,149,014,345,292,985.25
  5. Step 5: Solve for x
    x = 2,149,014,345,292,985.25/76,288,018.40
  6. Step 6: Final answer
    x = 28,169,749.20

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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.