Home / 72,912,078.10-109,368,117.15-71,778,337.30

Finding the Fourth Proportional to 72,912,078.10, 109,368,117.15 and 71,778,337.30

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Solution

The fourth proportional to 72,912,078.10, 109,368,117.15 and 71,778,337.30 is: 107,667,505.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,912,078.10 : 109,368,117.15 = 71,778,337.30 : x
  2. Step 2: Convert to fraction form
    72,912,078.10/109,368,117.15 = 71,778,337.30/x
  3. Step 3: Cross multiply
    72,912,078.10x = 109,368,117.15 × 71,778,337.30
  4. Step 4: Simplify right side
    72,912,078.10x = 7,850,261,602,658,615
  5. Step 5: Solve for x
    x = 7,850,261,602,658,615/72,912,078.10
  6. Step 6: Final answer
    x = 107,667,505.95

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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.