Finding the Fourth Proportional to 53,281,148.68, 79,921,726.05 and 12,891,632.68
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Solution
The fourth proportional to 53,281,148.68, 79,921,726.05 and 12,891,632.68 is: 19,337,449.75
Step by Step Solution
- Step 1: Write the proportion equation
53,281,148.68 : 79,921,726.05 = 12,891,632.68 : x - Step 2: Convert to fraction form
53,281,148.68/79,921,726.05 = 12,891,632.68/x - Step 3: Cross multiply
53,281,148.68x = 79,921,726.05 × 12,891,632.68 - Step 4: Simplify right side
53,281,148.68x = 1,030,321,534,988,578.75 - Step 5: Solve for x
x = 1,030,321,534,988,578.75/53,281,148.68 - Step 6: Final answer
x = 19,337,449.75
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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.