Finding the Fourth Proportional to 78,131,895.16, 107,814,246.60 and 45,102,785.08
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Solution
The fourth proportional to 78,131,895.16, 107,814,246.60 and 45,102,785.08 is: 62,237,358.80
Step by Step Solution
- Step 1: Write the proportion equation
78,131,895.16 : 107,814,246.60 = 45,102,785.08 : x - Step 2: Convert to fraction form
78,131,895.16/107,814,246.60 = 45,102,785.08/x - Step 3: Cross multiply
78,131,895.16x = 107,814,246.60 × 45,102,785.08 - Step 4: Simplify right side
78,131,895.16x = 4,862,722,792,961,920 - Step 5: Solve for x
x = 4,862,722,792,961,920/78,131,895.16 - Step 6: Final answer
x = 62,237,358.80
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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.