Home / 90,838,557.20-136,289,328.60-39,757,235.60

Finding the Fourth Proportional to 90,838,557.20, 136,289,328.60 and 39,757,235.60

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Solution

The fourth proportional to 90,838,557.20, 136,289,328.60 and 39,757,235.60 is: 59,649,636.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,838,557.20 : 136,289,328.60 = 39,757,235.60 : x
  2. Step 2: Convert to fraction form
    90,838,557.20/136,289,328.60 = 39,757,235.60/x
  3. Step 3: Cross multiply
    90,838,557.20x = 136,289,328.60 × 39,757,235.60
  4. Step 4: Simplify right side
    90,838,557.20x = 5,418,486,946,916,018
  5. Step 5: Solve for x
    x = 5,418,486,946,916,018/90,838,557.20
  6. Step 6: Final answer
    x = 59,649,636.83

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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.