Finding the Fourth Proportional to 87,950,970.79, 121,321,913.24 and 54,853,759.17
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Solution
The fourth proportional to 87,950,970.79, 121,321,913.24 and 54,853,759.17 is: 75,666,737.40
Step by Step Solution
- Step 1: Write the proportion equation
87,950,970.79 : 121,321,913.24 = 54,853,759.17 : x - Step 2: Convert to fraction form
87,950,970.79/121,321,913.24 = 54,853,759.17/x - Step 3: Cross multiply
87,950,970.79x = 121,321,913.24 × 54,853,759.17 - Step 4: Simplify right side
87,950,970.79x = 6,654,963,011,047,729 - Step 5: Solve for x
x = 6,654,963,011,047,729/87,950,970.79 - Step 6: Final answer
x = 75,666,737.40
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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.