Home / 90,838,672.20-136,289,501.10-39,757,350.60

Finding the Fourth Proportional to 90,838,672.20, 136,289,501.10 and 39,757,350.60

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Solution

The fourth proportional to 90,838,672.20, 136,289,501.10 and 39,757,350.60 is: 59,649,809.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,838,672.20 : 136,289,501.10 = 39,757,350.60 : x
  2. Step 2: Convert to fraction form
    90,838,672.20/136,289,501.10 = 39,757,350.60/x
  3. Step 3: Cross multiply
    90,838,672.20x = 136,289,501.10 × 39,757,350.60
  4. Step 4: Simplify right side
    90,838,672.20x = 5,418,509,478,331,786
  5. Step 5: Solve for x
    x = 5,418,509,478,331,786/90,838,672.20
  6. Step 6: Final answer
    x = 59,649,809.35

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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.