Finding the Fourth Proportional to 72,356,646.35, 99,852,802.63 and 39,316,895.37
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Solution
The fourth proportional to 72,356,646.35, 99,852,802.63 and 39,316,895.37 is: 54,257,658.30
Step by Step Solution
- Step 1: Write the proportion equation
72,356,646.35 : 99,852,802.63 = 39,316,895.37 : x - Step 2: Convert to fraction form
72,356,646.35/99,852,802.63 = 39,316,895.37/x - Step 3: Cross multiply
72,356,646.35x = 99,852,802.63 × 39,316,895.37 - Step 4: Simplify right side
72,356,646.35x = 3,925,902,193,306,678 - Step 5: Solve for x
x = 3,925,902,193,306,678/72,356,646.35 - Step 6: Final answer
x = 54,257,658.30
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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.