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Finding the Fourth Proportional to 28,978,075.20, 43,467,112.80 and 28,552,922.40

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Solution

The fourth proportional to 28,978,075.20, 43,467,112.80 and 28,552,922.40 is: 42,829,383.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,075.20 : 43,467,112.80 = 28,552,922.40 : x
  2. Step 2: Convert to fraction form
    28,978,075.20/43,467,112.80 = 28,552,922.40/x
  3. Step 3: Cross multiply
    28,978,075.20x = 43,467,112.80 × 28,552,922.40
  4. Step 4: Simplify right side
    28,978,075.20x = 1,241,113,098,730,446.50
  5. Step 5: Solve for x
    x = 1,241,113,098,730,446.50/28,978,075.20
  6. Step 6: Final answer
    x = 42,829,383.60

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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.