Finding the Fourth Proportional to 38,128,069.82, 52,617,088.61 and 20,724,455.99
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Solution
The fourth proportional to 38,128,069.82, 52,617,088.61 and 20,724,455.99 is: 28,599,940.73
Step by Step Solution
- Step 1: Write the proportion equation
38,128,069.82 : 52,617,088.61 = 20,724,455.99 : x - Step 2: Convert to fraction form
38,128,069.82/52,617,088.61 = 20,724,455.99/x - Step 3: Cross multiply
38,128,069.82x = 52,617,088.61 × 20,724,455.99 - Step 4: Simplify right side
38,128,069.82x = 1,090,460,536,853,167.50 - Step 5: Solve for x
x = 1,090,460,536,853,167.50/38,128,069.82 - Step 6: Final answer
x = 28,599,940.73
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1.5x scale
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.