Finding the Fourth Proportional to 91,290,586,647.66, 125,928,668,343.51 and 56,936,650,545.99
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Solution
The fourth proportional to 91,290,586,647.66, 125,928,668,343.51 and 56,936,650,545.99 is: 78,539,933,266.82
Step by Step Solution
- Step 1: Write the proportion equation
91,290,586,647.66 : 125,928,668,343.51 = 56,936,650,545.99 : x - Step 2: Convert to fraction form
91,290,586,647.66/125,928,668,343.51 = 56,936,650,545.99/x - Step 3: Cross multiply
91,290,586,647.66x = 125,928,668,343.51 × 56,936,650,545.99 - Step 4: Simplify right side
91,290,586,647.66x = 7,169,956,583,196,301,721,600 - Step 5: Solve for x
x = 7,169,956,583,196,301,721,600/91,290,586,647.66 - Step 6: Final answer
x = 78,539,933,266.82
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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.