Finding the Fourth Proportional to 71,668,618.21, 106,979,719.18 and 61,498,830.36
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Solution
The fourth proportional to 71,668,618.21, 106,979,719.18 and 61,498,830.36 is: 91,799,280.72
Step by Step Solution
- Step 1: Write the proportion equation
71,668,618.21 : 106,979,719.18 = 61,498,830.36 : x - Step 2: Convert to fraction form
71,668,618.21/106,979,719.18 = 61,498,830.36/x - Step 3: Cross multiply
71,668,618.21x = 106,979,719.18 × 61,498,830.36 - Step 4: Simplify right side
71,668,618.21x = 6,579,127,601,811,259 - Step 5: Solve for x
x = 6,579,127,601,811,259/71,668,618.21 - Step 6: Final answer
x = 91,799,280.72
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.