Finding the Fourth Proportional to 87,795,696.80, 121,165,501.76 and 48,649,752.74
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Solution
The fourth proportional to 87,795,696.80, 121,165,501.76 and 48,649,752.74 is: 67,140,781.56
Step by Step Solution
- Step 1: Write the proportion equation
87,795,696.80 : 121,165,501.76 = 48,649,752.74 : x - Step 2: Convert to fraction form
87,795,696.80/121,165,501.76 = 48,649,752.74/x - Step 3: Cross multiply
87,795,696.80x = 121,165,501.76 × 48,649,752.74 - Step 4: Simplify right side
87,795,696.80x = 5,894,671,700,998,786 - Step 5: Solve for x
x = 5,894,671,700,998,786/87,795,696.80 - Step 6: Final answer
x = 67,140,781.56
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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.