Finding the Fourth Proportional to 77,137,728.63, 106,444,824.74 and 42,332,661.09
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Solution
The fourth proportional to 77,137,728.63, 106,444,824.74 and 42,332,661.09 is: 58,416,196.20
Step by Step Solution
- Step 1: Write the proportion equation
77,137,728.63 : 106,444,824.74 = 42,332,661.09 : x - Step 2: Convert to fraction form
77,137,728.63/106,444,824.74 = 42,332,661.09/x - Step 3: Cross multiply
77,137,728.63x = 106,444,824.74 × 42,332,661.09 - Step 4: Simplify right side
77,137,728.63x = 4,506,092,690,291,204 - Step 5: Solve for x
x = 4,506,092,690,291,204/77,137,728.63 - Step 6: Final answer
x = 58,416,196.20
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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.