Home / 68,808,840.80-103,213,261.20-66,163,445.60

Finding the Fourth Proportional to 68,808,840.80, 103,213,261.20 and 66,163,445.60

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Solution

The fourth proportional to 68,808,840.80, 103,213,261.20 and 66,163,445.60 is: 99,245,168.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,808,840.80 : 103,213,261.20 = 66,163,445.60 : x
  2. Step 2: Convert to fraction form
    68,808,840.80/103,213,261.20 = 66,163,445.60/x
  3. Step 3: Cross multiply
    68,808,840.80x = 103,213,261.20 × 66,163,445.60
  4. Step 4: Simplify right side
    68,808,840.80x = 6,828,944,992,604,791
  5. Step 5: Solve for x
    x = 6,828,944,992,604,791/68,808,840.80
  6. Step 6: Final answer
    x = 99,245,168.40

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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.