Finding the Fourth Proportional to 99,631,017.36, 137,493,239.40 and 55,577,702.88
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Solution
The fourth proportional to 99,631,017.36, 137,493,239.40 and 55,577,702.88 is: 76,698,588.55
Step by Step Solution
- Step 1: Write the proportion equation
99,631,017.36 : 137,493,239.40 = 55,577,702.88 : x - Step 2: Convert to fraction form
99,631,017.36/137,493,239.40 = 55,577,702.88/x - Step 3: Cross multiply
99,631,017.36x = 137,493,239.40 × 55,577,702.88 - Step 4: Simplify right side
99,631,017.36x = 7,641,558,407,381,910 - Step 5: Solve for x
x = 7,641,558,407,381,910/99,631,017.36 - Step 6: Final answer
x = 76,698,588.55
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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.