Finding the Fourth Proportional to 77,962,840.53, 107,588,721.99 and 43,155,530.97
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Solution
The fourth proportional to 77,962,840.53, 107,588,721.99 and 43,155,530.97 is: 59,554,633.88
Step by Step Solution
- Step 1: Write the proportion equation
77,962,840.53 : 107,588,721.99 = 43,155,530.97 : x - Step 2: Convert to fraction form
77,962,840.53/107,588,721.99 = 43,155,530.97/x - Step 3: Cross multiply
77,962,840.53x = 107,588,721.99 × 43,155,530.97 - Step 4: Simplify right side
77,962,840.53x = 4,643,048,423,862,165 - Step 5: Solve for x
x = 4,643,048,423,862,165/77,962,840.53 - Step 6: Final answer
x = 59,554,633.88
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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.