Finding the Fourth Proportional to 87,916,881.55, 121,316,653.51 and 48,757,975.87
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Solution
The fourth proportional to 87,916,881.55, 121,316,653.51 and 48,757,975.87 is: 67,281,213.35
Step by Step Solution
- Step 1: Write the proportion equation
87,916,881.55 : 121,316,653.51 = 48,757,975.87 : x - Step 2: Convert to fraction form
87,916,881.55/121,316,653.51 = 48,757,975.87/x - Step 3: Cross multiply
87,916,881.55x = 121,316,653.51 × 48,757,975.87 - Step 4: Simplify right side
87,916,881.55x = 5,915,154,464,469,731 - Step 5: Solve for x
x = 5,915,154,464,469,731/87,916,881.55 - Step 6: Final answer
x = 67,281,213.35
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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.