Finding the Fourth Proportional to 71,782,393.46, 99,059,199.09 and 39,187,345.46
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Solution
The fourth proportional to 71,782,393.46, 99,059,199.09 and 39,187,345.46 is: 54,078,261.65
Step by Step Solution
- Step 1: Write the proportion equation
71,782,393.46 : 99,059,199.09 = 39,187,345.46 : x - Step 2: Convert to fraction form
71,782,393.46/99,059,199.09 = 39,187,345.46/x - Step 3: Cross multiply
71,782,393.46x = 99,059,199.09 × 39,187,345.46 - Step 4: Simplify right side
71,782,393.46x = 3,881,867,055,730,748 - Step 5: Solve for x
x = 3,881,867,055,730,748/71,782,393.46 - Step 6: Final answer
x = 54,078,261.65
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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.