Finding the Fourth Proportional to 38,769,513.85, 53,500,943.23 and 21,128,869.99
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Solution
The fourth proportional to 38,769,513.85, 53,500,943.23 and 21,128,869.99 is: 29,157,303.29
Step by Step Solution
- Step 1: Write the proportion equation
38,769,513.85 : 53,500,943.23 = 21,128,869.99 : x - Step 2: Convert to fraction form
38,769,513.85/53,500,943.23 = 21,128,869.99/x - Step 3: Cross multiply
38,769,513.85x = 53,500,943.23 × 21,128,869.99 - Step 4: Simplify right side
38,769,513.85x = 1,130,414,473,849,040.50 - Step 5: Solve for x
x = 1,130,414,473,849,040.50/38,769,513.85 - Step 6: Final answer
x = 29,157,303.29
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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.