Home / 78,918,796.20-118,210,232.70-65,481,868.20

Finding the Fourth Proportional to 78,918,796.20, 118,210,232.70 and 65,481,868.20

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Solution

The fourth proportional to 78,918,796.20, 118,210,232.70 and 65,481,868.20 is: 98,083,438.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,918,796.20 : 118,210,232.70 = 65,481,868.20 : x
  2. Step 2: Convert to fraction form
    78,918,796.20/118,210,232.70 = 65,481,868.20/x
  3. Step 3: Cross multiply
    78,918,796.20x = 118,210,232.70 × 65,481,868.20
  4. Step 4: Simplify right side
    78,918,796.20x = 7,740,626,877,552,731
  5. Step 5: Solve for x
    x = 7,740,626,877,552,731/78,918,796.20
  6. Step 6: Final answer
    x = 98,083,438.30

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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.