Finding the Fourth Proportional to 103,424,691.19, 142,727,657.29 and 56,381,792.21
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Solution
The fourth proportional to 103,424,691.19, 142,727,657.29 and 56,381,792.21 is: 77,807,736.46
Step by Step Solution
- Step 1: Write the proportion equation
103,424,691.19 : 142,727,657.29 = 56,381,792.21 : x - Step 2: Convert to fraction form
103,424,691.19/142,727,657.29 = 56,381,792.21/x - Step 3: Cross multiply
103,424,691.19x = 142,727,657.29 × 56,381,792.21 - Step 4: Simplify right side
103,424,691.19x = 8,047,241,115,942,938 - Step 5: Solve for x
x = 8,047,241,115,942,938/103,424,691.19 - Step 6: Final answer
x = 77,807,736.46
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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.