Home / 28,292,749.80-42,439,124.70-21,214,861.80

Finding the Fourth Proportional to 28,292,749.80, 42,439,124.70 and 21,214,861.80

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Solution

The fourth proportional to 28,292,749.80, 42,439,124.70 and 21,214,861.80 is: 31,822,292.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,292,749.80 : 42,439,124.70 = 21,214,861.80 : x
  2. Step 2: Convert to fraction form
    28,292,749.80/42,439,124.70 = 21,214,861.80/x
  3. Step 3: Cross multiply
    28,292,749.80x = 42,439,124.70 × 21,214,861.80
  4. Step 4: Simplify right side
    28,292,749.80x = 900,340,165,423,466.50
  5. Step 5: Solve for x
    x = 900,340,165,423,466.50/28,292,749.80
  6. Step 6: Final answer
    x = 31,822,292.70

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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.