Finding the Fourth Proportional to 72,246,579.74, 99,700,541.08 and 39,206,821.70
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Solution
The fourth proportional to 72,246,579.74, 99,700,541.08 and 39,206,821.70 is: 54,105,555.61
Step by Step Solution
- Step 1: Write the proportion equation
72,246,579.74 : 99,700,541.08 = 39,206,821.70 : x - Step 2: Convert to fraction form
72,246,579.74/99,700,541.08 = 39,206,821.70/x - Step 3: Cross multiply
72,246,579.74x = 99,700,541.08 × 39,206,821.70 - Step 4: Simplify right side
72,246,579.74x = 3,908,941,337,517,085.50 - Step 5: Solve for x
x = 3,908,941,337,517,085.50/72,246,579.74 - Step 6: Final answer
x = 54,105,555.61
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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.