Finding the Fourth Proportional to 76,829,228.99, 106,026,860.35 and 42,021,920.45
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Solution
The fourth proportional to 76,829,228.99, 106,026,860.35 and 42,021,920.45 is: 57,991,630.92
Step by Step Solution
- Step 1: Write the proportion equation
76,829,228.99 : 106,026,860.35 = 42,021,920.45 : x - Step 2: Convert to fraction form
76,829,228.99/106,026,860.35 = 42,021,920.45/x - Step 3: Cross multiply
76,829,228.99x = 106,026,860.35 × 42,021,920.45 - Step 4: Simplify right side
76,829,228.99x = 4,455,452,291,190,959 - Step 5: Solve for x
x = 4,455,452,291,190,959/76,829,228.99 - Step 6: Final answer
x = 57,991,630.92
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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.