Finding the Fourth Proportional to 70,590,972.80, 97,417,908.20 and 39,230,343.58
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Solution
The fourth proportional to 70,590,972.80, 97,417,908.20 and 39,230,343.58 is: 54,139,188.87
Step by Step Solution
- Step 1: Write the proportion equation
70,590,972.80 : 97,417,908.20 = 39,230,343.58 : x - Step 2: Convert to fraction form
70,590,972.80/97,417,908.20 = 39,230,343.58/x - Step 3: Cross multiply
70,590,972.80x = 97,417,908.20 × 39,230,343.58 - Step 4: Simplify right side
70,590,972.80x = 3,821,738,009,457,362 - Step 5: Solve for x
x = 3,821,738,009,457,362/70,590,972.80 - Step 6: Final answer
x = 54,139,188.87
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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.