Finding the Fourth Proportional to 70,912,137.12, 97,860,246.59 and 39,972,298.20
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Solution
The fourth proportional to 70,912,137.12, 97,860,246.59 and 39,972,298.20 is: 55,162,615.56
Step by Step Solution
- Step 1: Write the proportion equation
70,912,137.12 : 97,860,246.59 = 39,972,298.20 : x - Step 2: Convert to fraction form
70,912,137.12/97,860,246.59 = 39,972,298.20/x - Step 3: Cross multiply
70,912,137.12x = 97,860,246.59 × 39,972,298.20 - Step 4: Simplify right side
70,912,137.12x = 3,911,698,958,353,968 - Step 5: Solve for x
x = 3,911,698,958,353,968/70,912,137.12 - Step 6: Final answer
x = 55,162,615.56
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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.