Finding the Fourth Proportional to 31,415,319.45, 47,122,979.18 and 8,696,216.70
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Solution
The fourth proportional to 31,415,319.45, 47,122,979.18 and 8,696,216.70 is: 13,044,325.05
Step by Step Solution
- Step 1: Write the proportion equation
31,415,319.45 : 47,122,979.18 = 8,696,216.70 : x - Step 2: Convert to fraction form
31,415,319.45/47,122,979.18 = 8,696,216.70/x - Step 3: Cross multiply
31,415,319.45x = 47,122,979.18 × 8,696,216.70 - Step 4: Simplify right side
31,415,319.45x = 409,791,638,455,387.19 - Step 5: Solve for x
x = 409,791,638,455,387.19/31,415,319.45 - Step 6: Final answer
x = 13,044,325.05
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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.