Finding the Fourth Proportional to 86,938,555.12, 119,977,905.99 and 47,779,620.28
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Solution
The fourth proportional to 86,938,555.12, 119,977,905.99 and 47,779,620.28 is: 65,937,359.81
Step by Step Solution
- Step 1: Write the proportion equation
86,938,555.12 : 119,977,905.99 = 47,779,620.28 : x - Step 2: Convert to fraction form
86,938,555.12/119,977,905.99 = 47,779,620.28/x - Step 3: Cross multiply
86,938,555.12x = 119,977,905.99 × 47,779,620.28 - Step 4: Simplify right side
86,938,555.12x = 5,732,498,790,191,737 - Step 5: Solve for x
x = 5,732,498,790,191,737/86,938,555.12 - Step 6: Final answer
x = 65,937,359.81
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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.