Finding the Fourth Proportional to 28,072,623.80, 42,108,935.70 and 16,128,687.80
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Solution
The fourth proportional to 28,072,623.80, 42,108,935.70 and 16,128,687.80 is: 24,193,031.70
Step by Step Solution
- Step 1: Write the proportion equation
28,072,623.80 : 42,108,935.70 = 16,128,687.80 : x - Step 2: Convert to fraction form
28,072,623.80/42,108,935.70 = 16,128,687.80/x - Step 3: Cross multiply
28,072,623.80x = 42,108,935.70 × 16,128,687.80 - Step 4: Simplify right side
28,072,623.80x = 679,161,877,495,574.50 - Step 5: Solve for x
x = 679,161,877,495,574.50/28,072,623.80 - Step 6: Final answer
x = 24,193,031.70
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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.