Home / 85,938,546.60-128,718,863.10-74,601,138.60

Finding the Fourth Proportional to 85,938,546.60, 128,718,863.10 and 74,601,138.60

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Solution

The fourth proportional to 85,938,546.60, 128,718,863.10 and 74,601,138.60 is: 111,737,679.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,938,546.60 : 128,718,863.10 = 74,601,138.60 : x
  2. Step 2: Convert to fraction form
    85,938,546.60/128,718,863.10 = 74,601,138.60/x
  3. Step 3: Cross multiply
    85,938,546.60x = 128,718,863.10 × 74,601,138.60
  4. Step 4: Simplify right side
    85,938,546.60x = 9,602,573,746,557,524
  5. Step 5: Solve for x
    x = 9,602,573,746,557,524/85,938,546.60
  6. Step 6: Final answer
    x = 111,737,679.15

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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.