Finding the Fourth Proportional to 80,749,412.80, 121,124,119.20 and 74,513,838.40
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Solution
The fourth proportional to 80,749,412.80, 121,124,119.20 and 74,513,838.40 is: 111,770,757.60
Step by Step Solution
- Step 1: Write the proportion equation
80,749,412.80 : 121,124,119.20 = 74,513,838.40 : x - Step 2: Convert to fraction form
80,749,412.80/121,124,119.20 = 74,513,838.40/x - Step 3: Cross multiply
80,749,412.80x = 121,124,119.20 × 74,513,838.40 - Step 4: Simplify right side
80,749,412.80x = 9,025,423,044,411,138 - Step 5: Solve for x
x = 9,025,423,044,411,138/80,749,412.80 - Step 6: Final answer
x = 111,770,757.60
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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.