Finding the Fourth Proportional to 38,989,519.21, 53,805,339.16 and 21,348,101.23
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Solution
The fourth proportional to 38,989,519.21, 53,805,339.16 and 21,348,101.23 is: 29,460,271.65
Step by Step Solution
- Step 1: Write the proportion equation
38,989,519.21 : 53,805,339.16 = 21,348,101.23 : x - Step 2: Convert to fraction form
38,989,519.21/53,805,339.16 = 21,348,101.23/x - Step 3: Cross multiply
38,989,519.21x = 53,805,339.16 × 21,348,101.23 - Step 4: Simplify right side
38,989,519.21x = 1,148,641,827,337,017.75 - Step 5: Solve for x
x = 1,148,641,827,337,017.75/38,989,519.21 - Step 6: Final answer
x = 29,460,271.65
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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.