Finding the Fourth Proportional to 77,260,749.21, 106,619,803.74 and 42,455,684.25
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Solution
The fourth proportional to 77,260,749.21, 106,619,803.74 and 42,455,684.25 is: 58,588,827.69
Step by Step Solution
- Step 1: Write the proportion equation
77,260,749.21 : 106,619,803.74 = 42,455,684.25 : x - Step 2: Convert to fraction form
77,260,749.21/106,619,803.74 = 42,455,684.25/x - Step 3: Cross multiply
77,260,749.21x = 106,619,803.74 × 42,455,684.25 - Step 4: Simplify right side
77,260,749.21x = 4,526,616,722,382,409 - Step 5: Solve for x
x = 4,526,616,722,382,409/77,260,749.21 - Step 6: Final answer
x = 58,588,827.69
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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.