Finding the Fourth Proportional to 42,830,795.68, 64,246,191.90 and 12,538,658.68
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Solution
The fourth proportional to 42,830,795.68, 64,246,191.90 and 12,538,658.68 is: 18,807,987.55
Step by Step Solution
- Step 1: Write the proportion equation
42,830,795.68 : 64,246,191.90 = 12,538,658.68 : x - Step 2: Convert to fraction form
42,830,795.68/64,246,191.90 = 12,538,658.68/x - Step 3: Cross multiply
42,830,795.68x = 64,246,191.90 × 12,538,658.68 - Step 4: Simplify right side
42,830,795.68x = 805,561,071,723,880.62 - Step 5: Solve for x
x = 805,561,071,723,880.62/42,830,795.68 - Step 6: Final answer
x = 18,807,987.55
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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.