Finding the Fourth Proportional to 100,621,873.46, 138,857,350.74 and 56,569,068.74
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Solution
The fourth proportional to 100,621,873.46, 138,857,350.74 and 56,569,068.74 is: 78,064,845.63
Step by Step Solution
- Step 1: Write the proportion equation
100,621,873.46 : 138,857,350.74 = 56,569,068.74 : x - Step 2: Convert to fraction form
100,621,873.46/138,857,350.74 = 56,569,068.74/x - Step 3: Cross multiply
100,621,873.46x = 138,857,350.74 × 56,569,068.74 - Step 4: Simplify right side
100,621,873.46x = 7,855,031,019,065,351 - Step 5: Solve for x
x = 7,855,031,019,065,351/100,621,873.46 - Step 6: Final answer
x = 78,064,845.63
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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.