Finding the Fourth Proportional to 77,661,888.96, 107,175,684.46 and 42,381,971.98
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Solution
The fourth proportional to 77,661,888.96, 107,175,684.46 and 42,381,971.98 is: 58,488,364.33
Step by Step Solution
- Step 1: Write the proportion equation
77,661,888.96 : 107,175,684.46 = 42,381,971.98 : x - Step 2: Convert to fraction form
77,661,888.96/107,175,684.46 = 42,381,971.98/x - Step 3: Cross multiply
77,661,888.96x = 107,175,684.46 × 42,381,971.98 - Step 4: Simplify right side
77,661,888.96x = 4,542,316,855,721,041 - Step 5: Solve for x
x = 4,542,316,855,721,041/77,661,888.96 - Step 6: Final answer
x = 58,488,364.33
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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.