Finding the Fourth Proportional to 77,179,796.19, 106,508,304.68 and 42,374,730.15
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Solution
The fourth proportional to 77,179,796.19, 106,508,304.68 and 42,374,730.15 is: 58,477,229.69
Step by Step Solution
- Step 1: Write the proportion equation
77,179,796.19 : 106,508,304.68 = 42,374,730.15 : x - Step 2: Convert to fraction form
77,179,796.19/106,508,304.68 = 42,374,730.15/x - Step 3: Cross multiply
77,179,796.19x = 106,508,304.68 × 42,374,730.15 - Step 4: Simplify right side
77,179,796.19x = 4,513,260,669,337,108 - Step 5: Solve for x
x = 4,513,260,669,337,108/77,179,796.19 - Step 6: Final answer
x = 58,477,229.69
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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.