Finding the Fourth Proportional to 79,291,448.40, 109,442,312.46 and 54,183,726.12
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Solution
The fourth proportional to 79,291,448.40, 109,442,312.46 and 54,183,726.12 is: 74,787,286.70
Step by Step Solution
- Step 1: Write the proportion equation
79,291,448.40 : 109,442,312.46 = 54,183,726.12 : x - Step 2: Convert to fraction form
79,291,448.40/109,442,312.46 = 54,183,726.12/x - Step 3: Cross multiply
79,291,448.40x = 109,442,312.46 × 54,183,726.12 - Step 4: Simplify right side
79,291,448.40x = 5,929,992,284,272,103 - Step 5: Solve for x
x = 5,929,992,284,272,103/79,291,448.40 - Step 6: Final answer
x = 74,787,286.70
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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.