Finding the Fourth Proportional to 81,859,965.12, 112,963,785.84 and 45,189,748.80
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Solution
The fourth proportional to 81,859,965.12, 112,963,785.84 and 45,189,748.80 is: 62,360,215.99
Step by Step Solution
- Step 1: Write the proportion equation
81,859,965.12 : 112,963,785.84 = 45,189,748.80 : x - Step 2: Convert to fraction form
81,859,965.12/112,963,785.84 = 45,189,748.80/x - Step 3: Cross multiply
81,859,965.12x = 112,963,785.84 × 45,189,748.80 - Step 4: Simplify right side
81,859,965.12x = 5,104,805,105,606,597 - Step 5: Solve for x
x = 5,104,805,105,606,597/81,859,965.12 - Step 6: Final answer
x = 62,360,215.99
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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.