Finding the Fourth Proportional to 98,487,864.96, 135,915,816.98 and 54,435,559.20
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Solution
The fourth proportional to 98,487,864.96, 135,915,816.98 and 54,435,559.20 is: 75,122,488.49
Step by Step Solution
- Step 1: Write the proportion equation
98,487,864.96 : 135,915,816.98 = 54,435,559.20 : x - Step 2: Convert to fraction form
98,487,864.96/135,915,816.98 = 54,435,559.20/x - Step 3: Cross multiply
98,487,864.96x = 135,915,816.98 × 54,435,559.20 - Step 4: Simplify right side
98,487,864.96x = 7,398,653,501,431,155 - Step 5: Solve for x
x = 7,398,653,501,431,155/98,487,864.96 - Step 6: Final answer
x = 75,122,488.49
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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.