Home / 66,431,970.40-99,647,955.60-40,789,832.80

Finding the Fourth Proportional to 66,431,970.40, 99,647,955.60 and 40,789,832.80

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Solution

The fourth proportional to 66,431,970.40, 99,647,955.60 and 40,789,832.80 is: 61,184,749.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,431,970.40 : 99,647,955.60 = 40,789,832.80 : x
  2. Step 2: Convert to fraction form
    66,431,970.40/99,647,955.60 = 40,789,832.80/x
  3. Step 3: Cross multiply
    66,431,970.40x = 99,647,955.60 × 40,789,832.80
  4. Step 4: Simplify right side
    66,431,970.40x = 4,064,623,447,785,823
  5. Step 5: Solve for x
    x = 4,064,623,447,785,823/66,431,970.40
  6. Step 6: Final answer
    x = 61,184,749.20

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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.