Finding the Fourth Proportional to 85,832,121.30, 128,748,181.95 and 76,426,271.70
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Solution
The fourth proportional to 85,832,121.30, 128,748,181.95 and 76,426,271.70 is: 114,639,407.55
Step by Step Solution
- Step 1: Write the proportion equation
85,832,121.30 : 128,748,181.95 = 76,426,271.70 : x - Step 2: Convert to fraction form
85,832,121.30/128,748,181.95 = 76,426,271.70/x - Step 3: Cross multiply
85,832,121.30x = 128,748,181.95 × 76,426,271.70 - Step 4: Simplify right side
85,832,121.30x = 9,839,743,534,591,736 - Step 5: Solve for x
x = 9,839,743,534,591,736/85,832,121.30 - Step 6: Final answer
x = 114,639,407.55
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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.