Finding the Fourth Proportional to 28,605,765.21, 39,477,305.57 and 16,216,098.76
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Solution
The fourth proportional to 28,605,765.21, 39,477,305.57 and 16,216,098.76 is: 22,378,981.34
Step by Step Solution
- Step 1: Write the proportion equation
28,605,765.21 : 39,477,305.57 = 16,216,098.76 : x - Step 2: Convert to fraction form
28,605,765.21/39,477,305.57 = 16,216,098.76/x - Step 3: Cross multiply
28,605,765.21x = 39,477,305.57 × 16,216,098.76 - Step 4: Simplify right side
28,605,765.21x = 640,167,885,901,818.12 - Step 5: Solve for x
x = 640,167,885,901,818.12/28,605,765.21 - Step 6: Final answer
x = 22,378,981.34
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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.