Finding the Fourth Proportional to 81,107,291.52, 121,658,837.76 and 27,254,603.52
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Solution
The fourth proportional to 81,107,291.52, 121,658,837.76 and 27,254,603.52 is: 40,881,199.78
Step by Step Solution
- Step 1: Write the proportion equation
81,107,291.52 : 121,658,837.76 = 27,254,603.52 : x - Step 2: Convert to fraction form
81,107,291.52/121,658,837.76 = 27,254,603.52/x - Step 3: Cross multiply
81,107,291.52x = 121,658,837.76 × 27,254,603.52 - Step 4: Simplify right side
81,107,291.52x = 3,315,763,387,852,805 - Step 5: Solve for x
x = 3,315,763,387,852,805/81,107,291.52 - Step 6: Final answer
x = 40,881,199.78
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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.