Home / 77,290,971.20-115,936,456.80-73,973,729.60

Finding the Fourth Proportional to 77,290,971.20, 115,936,456.80 and 73,973,729.60

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Solution

The fourth proportional to 77,290,971.20, 115,936,456.80 and 73,973,729.60 is: 110,960,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,290,971.20 : 115,936,456.80 = 73,973,729.60 : x
  2. Step 2: Convert to fraction form
    77,290,971.20/115,936,456.80 = 73,973,729.60/x
  3. Step 3: Cross multiply
    77,290,971.20x = 115,936,456.80 × 73,973,729.60
  4. Step 4: Simplify right side
    77,290,971.20x = 8,576,252,106,105,280
  5. Step 5: Solve for x
    x = 8,576,252,106,105,280/77,290,971.20
  6. Step 6: Final answer
    x = 110,960,594.40

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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.