Finding the Fourth Proportional to 77,183,687.23, 106,513,697.93 and 42,378,631.99
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Solution
The fourth proportional to 77,183,687.23, 106,513,697.93 and 42,378,631.99 is: 58,482,627.20
Step by Step Solution
- Step 1: Write the proportion equation
77,183,687.23 : 106,513,697.93 = 42,378,631.99 : x - Step 2: Convert to fraction form
77,183,687.23/106,513,697.93 = 42,378,631.99/x - Step 3: Cross multiply
77,183,687.23x = 106,513,697.93 × 42,378,631.99 - Step 4: Simplify right side
77,183,687.23x = 4,513,904,805,991,317 - Step 5: Solve for x
x = 4,513,904,805,991,317/77,183,687.23 - Step 6: Final answer
x = 58,482,627.20
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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.