Finding the Fourth Proportional to 77,129,518.72, 115,633,404.26 and 38,241,157.64
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Solution
The fourth proportional to 77,129,518.72, 115,633,404.26 and 38,241,157.64 is: 57,331,554.95
Step by Step Solution
- Step 1: Write the proportion equation
77,129,518.72 : 115,633,404.26 = 38,241,157.64 : x - Step 2: Convert to fraction form
77,129,518.72/115,633,404.26 = 38,241,157.64/x - Step 3: Cross multiply
77,129,518.72x = 115,633,404.26 × 38,241,157.64 - Step 4: Simplify right side
77,129,518.72x = 4,421,955,240,756,508 - Step 5: Solve for x
x = 4,421,955,240,756,508/77,129,518.72 - Step 6: Final answer
x = 57,331,554.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.