Finding the Fourth Proportional to 74,879,910.80, 112,319,866.20 and 42,519,309.20
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Solution
The fourth proportional to 74,879,910.80, 112,319,866.20 and 42,519,309.20 is: 63,778,963.80
Step by Step Solution
- Step 1: Write the proportion equation
74,879,910.80 : 112,319,866.20 = 42,519,309.20 : x - Step 2: Convert to fraction form
74,879,910.80/112,319,866.20 = 42,519,309.20/x - Step 3: Cross multiply
74,879,910.80x = 112,319,866.20 × 42,519,309.20 - Step 4: Simplify right side
74,879,910.80x = 4,775,763,120,260,430 - Step 5: Solve for x
x = 4,775,763,120,260,430/74,879,910.80 - Step 6: Final answer
x = 63,778,963.80
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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.