Finding the Fourth Proportional to 81,736,515.60, 112,823,724.60 and 48,707,125.80
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Solution
The fourth proportional to 81,736,515.60, 112,823,724.60 and 48,707,125.80 is: 67,232,121.49
Step by Step Solution
- Step 1: Write the proportion equation
81,736,515.60 : 112,823,724.60 = 48,707,125.80 : x - Step 2: Convert to fraction form
81,736,515.60/112,823,724.60 = 48,707,125.80/x - Step 3: Cross multiply
81,736,515.60x = 112,823,724.60 × 48,707,125.80 - Step 4: Simplify right side
81,736,515.60x = 5,495,319,347,316,754 - Step 5: Solve for x
x = 5,495,319,347,316,754/81,736,515.60 - Step 6: Final answer
x = 67,232,121.49
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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.