Finding the Fourth Proportional to 79,430,911.20, 119,146,366.80 and 28,294,477.20
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Solution
The fourth proportional to 79,430,911.20, 119,146,366.80 and 28,294,477.20 is: 42,441,715.80
Step by Step Solution
- Step 1: Write the proportion equation
79,430,911.20 : 119,146,366.80 = 28,294,477.20 : x - Step 2: Convert to fraction form
79,430,911.20/119,146,366.80 = 28,294,477.20/x - Step 3: Cross multiply
79,430,911.20x = 119,146,366.80 × 28,294,477.20 - Step 4: Simplify right side
79,430,911.20x = 3,371,184,158,885,437 - Step 5: Solve for x
x = 3,371,184,158,885,437/79,430,911.20 - Step 6: Final answer
x = 42,441,715.80
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1.5x scale
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.