Finding the Fourth Proportional to 90,409,235.20, 135,688,502.40 and 41,961,644.80
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Solution
The fourth proportional to 90,409,235.20, 135,688,502.40 and 41,961,644.80 is: 62,977,114.32
Step by Step Solution
- Step 1: Write the proportion equation
90,409,235.20 : 135,688,502.40 = 41,961,644.80 : x - Step 2: Convert to fraction form
90,409,235.20/135,688,502.40 = 41,961,644.80/x - Step 3: Cross multiply
90,409,235.20x = 135,688,502.40 × 41,961,644.80 - Step 4: Simplify right side
90,409,235.20x = 5,693,712,741,152,747 - Step 5: Solve for x
x = 5,693,712,741,152,747/90,409,235.20 - Step 6: Final answer
x = 62,977,114.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.