Finding the Fourth Proportional to 81,736,390.40, 112,823,551.36 and 48,707,000.08
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Solution
The fourth proportional to 81,736,390.40, 112,823,551.36 and 48,707,000.08 is: 67,231,947.71
Step by Step Solution
- Step 1: Write the proportion equation
81,736,390.40 : 112,823,551.36 = 48,707,000.08 : x - Step 2: Convert to fraction form
81,736,390.40/112,823,551.36 = 48,707,000.08/x - Step 3: Cross multiply
81,736,390.40x = 112,823,551.36 × 48,707,000.08 - Step 4: Simplify right side
81,736,390.40x = 5,495,296,725,117,404 - Step 5: Solve for x
x = 5,495,296,725,117,404/81,736,390.40 - Step 6: Final answer
x = 67,231,947.71
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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.