Finding the Fourth Proportional to 84,746,959.20, 127,120,438.80 and 79,645,125.60
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Solution
The fourth proportional to 84,746,959.20, 127,120,438.80 and 79,645,125.60 is: 119,467,688.40
Step by Step Solution
- Step 1: Write the proportion equation
84,746,959.20 : 127,120,438.80 = 79,645,125.60 : x - Step 2: Convert to fraction form
84,746,959.20/127,120,438.80 = 79,645,125.60/x - Step 3: Cross multiply
84,746,959.20x = 127,120,438.80 × 79,645,125.60 - Step 4: Simplify right side
84,746,959.20x = 10,124,523,314,553,112 - Step 5: Solve for x
x = 10,124,523,314,553,112/84,746,959.20 - Step 6: Final answer
x = 119,467,688.40
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1.5x scale
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.