Finding the Fourth Proportional to 77,418,811.62, 106,837,138.26 and 42,610,754.72
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Solution
The fourth proportional to 77,418,811.62, 106,837,138.26 and 42,610,754.72 is: 58,802,389.21
Step by Step Solution
- Step 1: Write the proportion equation
77,418,811.62 : 106,837,138.26 = 42,610,754.72 : x - Step 2: Convert to fraction form
77,418,811.62/106,837,138.26 = 42,610,754.72/x - Step 3: Cross multiply
77,418,811.62x = 106,837,138.26 × 42,610,754.72 - Step 4: Simplify right side
77,418,811.62x = 4,552,411,092,849,403 - Step 5: Solve for x
x = 4,552,411,092,849,403/77,418,811.62 - Step 6: Final answer
x = 58,802,389.21
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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.