Finding the Fourth Proportional to 78,743,721.60, 118,115,582.40 and 49,896,316.80
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Solution
The fourth proportional to 78,743,721.60, 118,115,582.40 and 49,896,316.80 is: 74,844,475.20
Step by Step Solution
- Step 1: Write the proportion equation
78,743,721.60 : 118,115,582.40 = 49,896,316.80 : x - Step 2: Convert to fraction form
78,743,721.60/118,115,582.40 = 49,896,316.80/x - Step 3: Cross multiply
78,743,721.60x = 118,115,582.40 × 49,896,316.80 - Step 4: Simplify right side
78,743,721.60x = 5,893,532,518,446,904 - Step 5: Solve for x
x = 5,893,532,518,446,904/78,743,721.60 - Step 6: Final answer
x = 74,844,475.20
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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.