Home / 80,557,310.40-120,835,965.60-72,495,153.60

Finding the Fourth Proportional to 80,557,310.40, 120,835,965.60 and 72,495,153.60

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Solution

The fourth proportional to 80,557,310.40, 120,835,965.60 and 72,495,153.60 is: 108,742,730.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,557,310.40 : 120,835,965.60 = 72,495,153.60 : x
  2. Step 2: Convert to fraction form
    80,557,310.40/120,835,965.60 = 72,495,153.60/x
  3. Step 3: Cross multiply
    80,557,310.40x = 120,835,965.60 × 72,495,153.60
  4. Step 4: Simplify right side
    80,557,310.40x = 8,760,021,886,576,315
  5. Step 5: Solve for x
    x = 8,760,021,886,576,315/80,557,310.40
  6. Step 6: Final answer
    x = 108,742,730.40

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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.