Home / 71,784,043.20-107,676,064.80-28,659,902.40

Finding the Fourth Proportional to 71,784,043.20, 107,676,064.80 and 28,659,902.40

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Solution

The fourth proportional to 71,784,043.20, 107,676,064.80 and 28,659,902.40 is: 42,989,853.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,784,043.20 : 107,676,064.80 = 28,659,902.40 : x
  2. Step 2: Convert to fraction form
    71,784,043.20/107,676,064.80 = 28,659,902.40/x
  3. Step 3: Cross multiply
    71,784,043.20x = 107,676,064.80 × 28,659,902.40
  4. Step 4: Simplify right side
    71,784,043.20x = 3,085,985,507,984,075.50
  5. Step 5: Solve for x
    x = 3,085,985,507,984,075.50/71,784,043.20
  6. Step 6: Final answer
    x = 42,989,853.60

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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.