Finding the Fourth Proportional to 77,786,595.68, 107,345,281.66 and 42,979,038.14
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Solution
The fourth proportional to 77,786,595.68, 107,345,281.66 and 42,979,038.14 is: 59,310,950.87
Step by Step Solution
- Step 1: Write the proportion equation
77,786,595.68 : 107,345,281.66 = 42,979,038.14 : x - Step 2: Convert to fraction form
77,786,595.68/107,345,281.66 = 42,979,038.14/x - Step 3: Cross multiply
77,786,595.68x = 107,345,281.66 × 42,979,038.14 - Step 4: Simplify right side
77,786,595.68x = 4,613,596,954,775,098 - Step 5: Solve for x
x = 4,613,596,954,775,098/77,786,595.68 - Step 6: Final answer
x = 59,310,950.87
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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.