Finding the Fourth Proportional to 101,472,788.90, 140,030,506.33 and 57,418,985.99
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Solution
The fourth proportional to 101,472,788.90, 140,030,506.33 and 57,418,985.99 is: 79,237,101.57
Step by Step Solution
- Step 1: Write the proportion equation
101,472,788.90 : 140,030,506.33 = 57,418,985.99 : x - Step 2: Convert to fraction form
101,472,788.90/140,030,506.33 = 57,418,985.99/x - Step 3: Cross multiply
101,472,788.90x = 140,030,506.33 × 57,418,985.99 - Step 4: Simplify right side
101,472,788.90x = 8,040,409,680,291,175 - Step 5: Solve for x
x = 8,040,409,680,291,175/101,472,788.90 - Step 6: Final answer
x = 79,237,101.57
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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.