Finding the Fourth Proportional to 98,415,208.55, 135,817,113.82 and 56,599,306.50
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Solution
The fourth proportional to 98,415,208.55, 135,817,113.82 and 56,599,306.50 is: 78,109,415.88
Step by Step Solution
- Step 1: Write the proportion equation
98,415,208.55 : 135,817,113.82 = 56,599,306.50 : x - Step 2: Convert to fraction form
98,415,208.55/135,817,113.82 = 56,599,306.50/x - Step 3: Cross multiply
98,415,208.55x = 135,817,113.82 × 56,599,306.50 - Step 4: Simplify right side
98,415,208.55x = 7,687,154,453,043,565 - Step 5: Solve for x
x = 7,687,154,453,043,565/98,415,208.55 - Step 6: Final answer
x = 78,109,415.88
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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.