Finding the Fourth Proportional to 28,651,610.10, 42,977,415.15 and 19,581,683.70
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Solution
The fourth proportional to 28,651,610.10, 42,977,415.15 and 19,581,683.70 is: 29,372,525.55
Step by Step Solution
- Step 1: Write the proportion equation
28,651,610.10 : 42,977,415.15 = 19,581,683.70 : x - Step 2: Convert to fraction form
28,651,610.10/42,977,415.15 = 19,581,683.70/x - Step 3: Cross multiply
28,651,610.10x = 42,977,415.15 × 19,581,683.70 - Step 4: Simplify right side
28,651,610.10x = 841,570,149,710,888 - Step 5: Solve for x
x = 841,570,149,710,888/28,651,610.10 - Step 6: Final answer
x = 29,372,525.55
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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.