Finding the Fourth Proportional to 87,999,967.98, 121,430,106.42 and 48,843,395.10
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Solution
The fourth proportional to 87,999,967.98, 121,430,106.42 and 48,843,395.10 is: 67,398,418.44
Step by Step Solution
- Step 1: Write the proportion equation
87,999,967.98 : 121,430,106.42 = 48,843,395.10 : x - Step 2: Convert to fraction form
87,999,967.98/121,430,106.42 = 48,843,395.10/x - Step 3: Cross multiply
87,999,967.98x = 121,430,106.42 × 48,843,395.10 - Step 4: Simplify right side
87,999,967.98x = 5,931,058,664,907,107 - Step 5: Solve for x
x = 5,931,058,664,907,107/87,999,967.98 - Step 6: Final answer
x = 67,398,418.44
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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.