Finding the Fourth Proportional to 77,282,428.80, 115,923,643.20 and 47,049,340.80
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Solution
The fourth proportional to 77,282,428.80, 115,923,643.20 and 47,049,340.80 is: 70,574,011.20
Step by Step Solution
- Step 1: Write the proportion equation
77,282,428.80 : 115,923,643.20 = 47,049,340.80 : x - Step 2: Convert to fraction form
77,282,428.80/115,923,643.20 = 47,049,340.80/x - Step 3: Cross multiply
77,282,428.80x = 115,923,643.20 × 47,049,340.80 - Step 4: Simplify right side
77,282,428.80x = 5,454,130,995,694,402 - Step 5: Solve for x
x = 5,454,130,995,694,402/77,282,428.80 - Step 6: Final answer
x = 70,574,011.20
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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.