Home / 78,939,773.64-117,831,474.62-69,620,955.71

Finding the Fourth Proportional to 78,939,773.64, 117,831,474.62 and 69,620,955.71

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Solution

The fourth proportional to 78,939,773.64, 117,831,474.62 and 69,620,955.71 is: 103,921,502.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,939,773.64 : 117,831,474.62 = 69,620,955.71 : x
  2. Step 2: Convert to fraction form
    78,939,773.64/117,831,474.62 = 69,620,955.71/x
  3. Step 3: Cross multiply
    78,939,773.64x = 117,831,474.62 × 69,620,955.71
  4. Step 4: Simplify right side
    78,939,773.64x = 8,203,539,875,347,904
  5. Step 5: Solve for x
    x = 8,203,539,875,347,904/78,939,773.64
  6. Step 6: Final answer
    x = 103,921,502.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.