Home / 72,763,534.72-100,413,440.12-39,724,190.38

Finding the Fourth Proportional to 72,763,534.72, 100,413,440.12 and 39,724,190.38

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Solution

The fourth proportional to 72,763,534.72, 100,413,440.12 and 39,724,190.38 is: 54,819,252.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,763,534.72 : 100,413,440.12 = 39,724,190.38 : x
  2. Step 2: Convert to fraction form
    72,763,534.72/100,413,440.12 = 39,724,190.38/x
  3. Step 3: Cross multiply
    72,763,534.72x = 100,413,440.12 × 39,724,190.38
  4. Step 4: Simplify right side
    72,763,534.72x = 3,988,842,611,336,921.50
  5. Step 5: Solve for x
    x = 3,988,842,611,336,921.50/72,763,534.72
  6. Step 6: Final answer
    x = 54,819,252.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.