Finding the Fourth Proportional to 81,569,903.80, 122,354,855.70 and 47,085,287.80
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Solution
The fourth proportional to 81,569,903.80, 122,354,855.70 and 47,085,287.80 is: 70,627,931.70
Step by Step Solution
- Step 1: Write the proportion equation
81,569,903.80 : 122,354,855.70 = 47,085,287.80 : x - Step 2: Convert to fraction form
81,569,903.80/122,354,855.70 = 47,085,287.80/x - Step 3: Cross multiply
81,569,903.80x = 122,354,855.70 × 47,085,287.80 - Step 4: Simplify right side
81,569,903.80x = 5,761,113,594,361,970 - Step 5: Solve for x
x = 5,761,113,594,361,970/81,569,903.80 - Step 6: Final answer
x = 70,627,931.70
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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.