Finding the Fourth Proportional to 57,684,372.98, 79,604,438.61 and 31,578,890.81
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Solution
The fourth proportional to 57,684,372.98, 79,604,438.61 and 31,578,890.81 is: 43,578,871.45
Step by Step Solution
- Step 1: Write the proportion equation
57,684,372.98 : 79,604,438.61 = 31,578,890.81 : x - Step 2: Convert to fraction form
57,684,372.98/79,604,438.61 = 31,578,890.81/x - Step 3: Cross multiply
57,684,372.98x = 79,604,438.61 × 31,578,890.81 - Step 4: Simplify right side
57,684,372.98x = 2,513,819,874,458,516 - Step 5: Solve for x
x = 2,513,819,874,458,516/57,684,372.98 - Step 6: Final answer
x = 43,578,871.45
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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.