Finding the Fourth Proportional to 78,247,117,479.23, 117,377,437,246.21 and 21,586,980,489.31
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Solution
The fourth proportional to 78,247,117,479.23, 117,377,437,246.21 and 21,586,980,489.31 is: 32,382,335,980.52
Step by Step Solution
- Step 1: Write the proportion equation
78,247,117,479.23 : 117,377,437,246.21 = 21,586,980,489.31 : x - Step 2: Convert to fraction form
78,247,117,479.23/117,377,437,246.21 = 21,586,980,489.31/x - Step 3: Cross multiply
78,247,117,479.23x = 117,377,437,246.21 × 21,586,980,489.31 - Step 4: Simplify right side
78,247,117,479.23x = 2,533,824,447,719,613,661,184 - Step 5: Solve for x
x = 2,533,824,447,719,613,661,184/78,247,117,479.23 - Step 6: Final answer
x = 32,382,335,980.52
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.