Finding the Fourth Proportional to 45,139,789.14, 62,311,979.87 and 30,475,319.91
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Solution
The fourth proportional to 45,139,789.14, 62,311,979.87 and 30,475,319.91 is: 42,068,816.82
Step by Step Solution
- Step 1: Write the proportion equation
45,139,789.14 : 62,311,979.87 = 30,475,319.91 : x - Step 2: Convert to fraction form
45,139,789.14/62,311,979.87 = 30,475,319.91/x - Step 3: Cross multiply
45,139,789.14x = 62,311,979.87 × 30,475,319.91 - Step 4: Simplify right side
45,139,789.14x = 1,898,977,520,763,730.25 - Step 5: Solve for x
x = 1,898,977,520,763,730.25/45,139,789.14 - Step 6: Final answer
x = 42,068,816.82
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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.