Finding the Fourth Proportional to 72,146,995.99, 99,564,129.93 and 39,108,342.38
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Solution
The fourth proportional to 72,146,995.99, 99,564,129.93 and 39,108,342.38 is: 53,970,203.87
Step by Step Solution
- Step 1: Write the proportion equation
72,146,995.99 : 99,564,129.93 = 39,108,342.38 : x - Step 2: Convert to fraction form
72,146,995.99/99,564,129.93 = 39,108,342.38/x - Step 3: Cross multiply
72,146,995.99x = 99,564,129.93 × 39,108,342.38 - Step 4: Simplify right side
72,146,995.99x = 3,893,788,082,069,246 - Step 5: Solve for x
x = 3,893,788,082,069,246/72,146,995.99 - Step 6: Final answer
x = 53,970,203.87
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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.