Home / 85,159,968.96-127,739,940.36-20,463,774.78

Finding the Fourth Proportional to 85,159,968.96, 127,739,940.36 and 20,463,774.78

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Solution

The fourth proportional to 85,159,968.96, 127,739,940.36 and 20,463,774.78 is: 30,695,659.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,159,968.96 : 127,739,940.36 = 20,463,774.78 : x
  2. Step 2: Convert to fraction form
    85,159,968.96/127,739,940.36 = 20,463,774.78/x
  3. Step 3: Cross multiply
    85,159,968.96x = 127,739,940.36 × 20,463,774.78
  4. Step 4: Simplify right side
    85,159,968.96x = 2,614,041,369,937,672.50
  5. Step 5: Solve for x
    x = 2,614,041,369,937,672.50/85,159,968.96
  6. Step 6: Final answer
    x = 30,695,659.03

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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.