Finding the Fourth Proportional to 68,205,587.69, 102,306,904.37 and 19,020,128.61
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Solution
The fourth proportional to 68,205,587.69, 102,306,904.37 and 19,020,128.61 is: 28,529,780.99
Step by Step Solution
- Step 1: Write the proportion equation
68,205,587.69 : 102,306,904.37 = 19,020,128.61 : x - Step 2: Convert to fraction form
68,205,587.69/102,306,904.37 = 19,020,128.61/x - Step 3: Cross multiply
68,205,587.69x = 102,306,904.37 × 19,020,128.61 - Step 4: Simplify right side
68,205,587.69x = 1,945,890,478,713,270.25 - Step 5: Solve for x
x = 1,945,890,478,713,270.25/68,205,587.69 - Step 6: Final answer
x = 28,529,780.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.