Finding the Fourth Proportional to 39,960,963.16, 55,146,128.47 and 21,626,248.66
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Solution
The fourth proportional to 39,960,963.16, 55,146,128.47 and 21,626,248.66 is: 29,844,222.77
Step by Step Solution
- Step 1: Write the proportion equation
39,960,963.16 : 55,146,128.47 = 21,626,248.66 : x - Step 2: Convert to fraction form
39,960,963.16/55,146,128.47 = 21,626,248.66/x - Step 3: Cross multiply
39,960,963.16x = 55,146,128.47 × 21,626,248.66 - Step 4: Simplify right side
39,960,963.16x = 1,192,603,886,736,594.25 - Step 5: Solve for x
x = 1,192,603,886,736,594.25/39,960,963.16 - Step 6: Final answer
x = 29,844,222.77
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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.