Finding the Fourth Proportional to 98,153,769.20, 135,444,236.81 and 56,903,318.78
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Solution
The fourth proportional to 98,153,769.20, 135,444,236.81 and 56,903,318.78 is: 78,521,962.49
Step by Step Solution
- Step 1: Write the proportion equation
98,153,769.20 : 135,444,236.81 = 56,903,318.78 : x - Step 2: Convert to fraction form
98,153,769.20/135,444,236.81 = 56,903,318.78/x - Step 3: Cross multiply
98,153,769.20x = 135,444,236.81 × 56,903,318.78 - Step 4: Simplify right side
98,153,769.20x = 7,707,226,583,151,503 - Step 5: Solve for x
x = 7,707,226,583,151,503/98,153,769.20 - Step 6: Final answer
x = 78,521,962.49
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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.