Finding the Fourth Proportional to 77,921,333.97, 107,484,589.17 and 51,459,931.23
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Solution
The fourth proportional to 77,921,333.97, 107,484,589.17 and 51,459,931.23 is: 70,983,763.82
Step by Step Solution
- Step 1: Write the proportion equation
77,921,333.97 : 107,484,589.17 = 51,459,931.23 : x - Step 2: Convert to fraction form
77,921,333.97/107,484,589.17 = 51,459,931.23/x - Step 3: Cross multiply
77,921,333.97x = 107,484,589.17 × 51,459,931.23 - Step 4: Simplify right side
77,921,333.97x = 5,531,149,566,973,003 - Step 5: Solve for x
x = 5,531,149,566,973,003/77,921,333.97 - Step 6: Final answer
x = 70,983,763.82
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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.