Finding the Fourth Proportional to 80,786,931.80, 121,180,397.70 and 26,199,411.80
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Solution
The fourth proportional to 80,786,931.80, 121,180,397.70 and 26,199,411.80 is: 39,299,117.70
Step by Step Solution
- Step 1: Write the proportion equation
80,786,931.80 : 121,180,397.70 = 26,199,411.80 : x - Step 2: Convert to fraction form
80,786,931.80/121,180,397.70 = 26,199,411.80/x - Step 3: Cross multiply
80,786,931.80x = 121,180,397.70 × 26,199,411.80 - Step 4: Simplify right side
80,786,931.80x = 3,174,855,141,430,073 - Step 5: Solve for x
x = 3,174,855,141,430,073/80,786,931.80 - Step 6: Final answer
x = 39,299,117.70
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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.