Home / 79,638,021.20-119,457,031.80-39,327,237.20

Finding the Fourth Proportional to 79,638,021.20, 119,457,031.80 and 39,327,237.20

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Solution

The fourth proportional to 79,638,021.20, 119,457,031.80 and 39,327,237.20 is: 58,990,855.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,638,021.20 : 119,457,031.80 = 39,327,237.20 : x
  2. Step 2: Convert to fraction form
    79,638,021.20/119,457,031.80 = 39,327,237.20/x
  3. Step 3: Cross multiply
    79,638,021.20x = 119,457,031.80 × 39,327,237.20
  4. Step 4: Simplify right side
    79,638,021.20x = 4,697,915,024,806,543
  5. Step 5: Solve for x
    x = 4,697,915,024,806,543/79,638,021.20
  6. Step 6: Final answer
    x = 58,990,855.80

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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.