Finding the Fourth Proportional to 19,681,890.71, 29,519,471.12 and 5,301,595.40
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Solution
The fourth proportional to 19,681,890.71, 29,519,471.12 and 5,301,595.40 is: 7,951,486.70
Step by Step Solution
- Step 1: Write the proportion equation
19,681,890.71 : 29,519,471.12 = 5,301,595.40 : x - Step 2: Convert to fraction form
19,681,890.71/29,519,471.12 = 5,301,595.40/x - Step 3: Cross multiply
19,681,890.71x = 29,519,471.12 × 5,301,595.40 - Step 4: Simplify right side
19,681,890.71x = 156,500,292,126,119.50 - Step 5: Solve for x
x = 156,500,292,126,119.50/19,681,890.71 - Step 6: Final answer
x = 7,951,486.70
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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.