Home / 28,972,859.20-43,459,288.80-8,779,105.60

Finding the Fourth Proportional to 28,972,859.20, 43,459,288.80 and 8,779,105.60

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Solution

The fourth proportional to 28,972,859.20, 43,459,288.80 and 8,779,105.60 is: 13,168,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,972,859.20 : 43,459,288.80 = 8,779,105.60 : x
  2. Step 2: Convert to fraction form
    28,972,859.20/43,459,288.80 = 8,779,105.60/x
  3. Step 3: Cross multiply
    28,972,859.20x = 43,459,288.80 × 8,779,105.60
  4. Step 4: Simplify right side
    28,972,859.20x = 381,533,685,676,097.25
  5. Step 5: Solve for x
    x = 381,533,685,676,097.25/28,972,859.20
  6. Step 6: Final answer
    x = 13,168,658.40

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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.