Finding the Fourth Proportional to 77,436,368.40, 116,153,765.12 and 19,928,416.08
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Solution
The fourth proportional to 77,436,368.40, 116,153,765.12 and 19,928,416.08 is: 29,892,421.46
Step by Step Solution
- Step 1: Write the proportion equation
77,436,368.40 : 116,153,765.12 = 19,928,416.08 : x - Step 2: Convert to fraction form
77,436,368.40/116,153,765.12 = 19,928,416.08/x - Step 3: Cross multiply
77,436,368.40x = 116,153,765.12 × 19,928,416.08 - Step 4: Simplify right side
77,436,368.40x = 2,314,760,560,569,951 - Step 5: Solve for x
x = 2,314,760,560,569,951/77,436,368.40 - Step 6: Final answer
x = 29,892,421.46
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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.