Finding the Fourth Proportional to 86,018,833.80, 129,028,250.70 and 38,243,089.80
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Solution
The fourth proportional to 86,018,833.80, 129,028,250.70 and 38,243,089.80 is: 57,364,634.70
Step by Step Solution
- Step 1: Write the proportion equation
86,018,833.80 : 129,028,250.70 = 38,243,089.80 : x - Step 2: Convert to fraction form
86,018,833.80/129,028,250.70 = 38,243,089.80/x - Step 3: Cross multiply
86,018,833.80x = 129,028,250.70 × 38,243,089.80 - Step 4: Simplify right side
86,018,833.80x = 4,934,438,978,257,013 - Step 5: Solve for x
x = 4,934,438,978,257,013/86,018,833.80 - Step 6: Final answer
x = 57,364,634.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.