Finding the Fourth Proportional to 34,152,878.80, 47,130,831.84 and 18,471,920.80
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Solution
The fourth proportional to 34,152,878.80, 47,130,831.84 and 18,471,920.80 is: 25,491,174.49
Step by Step Solution
- Step 1: Write the proportion equation
34,152,878.80 : 47,130,831.84 = 18,471,920.80 : x - Step 2: Convert to fraction form
34,152,878.80/47,130,831.84 = 18,471,920.80/x - Step 3: Cross multiply
34,152,878.80x = 47,130,831.84 × 18,471,920.80 - Step 4: Simplify right side
34,152,878.80x = 870,596,992,986,598.38 - Step 5: Solve for x
x = 870,596,992,986,598.38/34,152,878.80 - Step 6: Final answer
x = 25,491,174.49
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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.