Finding the Fourth Proportional to 70,738,985.74, 97,618,800.40 and 39,799,081.21
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Solution
The fourth proportional to 70,738,985.74, 97,618,800.40 and 39,799,081.21 is: 54,922,169.50
Step by Step Solution
- Step 1: Write the proportion equation
70,738,985.74 : 97,618,800.40 = 39,799,081.21 : x - Step 2: Convert to fraction form
70,738,985.74/97,618,800.40 = 39,799,081.21/x - Step 3: Cross multiply
70,738,985.74x = 97,618,800.40 × 39,799,081.21 - Step 4: Simplify right side
70,738,985.74x = 3,885,138,564,742,381 - Step 5: Solve for x
x = 3,885,138,564,742,381/70,738,985.74 - Step 6: Final answer
x = 54,922,169.50
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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.