Finding the Fourth Proportional to 39,158,782.80, 54,035,956.71 and 22,639,971.91
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Solution
The fourth proportional to 39,158,782.80, 54,035,956.71 and 22,639,971.91 is: 31,241,332.20
Step by Step Solution
- Step 1: Write the proportion equation
39,158,782.80 : 54,035,956.71 = 22,639,971.91 : x - Step 2: Convert to fraction form
39,158,782.80/54,035,956.71 = 22,639,971.91/x - Step 3: Cross multiply
39,158,782.80x = 54,035,956.71 × 22,639,971.91 - Step 4: Simplify right side
39,158,782.80x = 1,223,372,542,044,376 - Step 5: Solve for x
x = 1,223,372,542,044,376/39,158,782.80 - Step 6: Final answer
x = 31,241,332.20
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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.