Finding the Fourth Proportional to 98,918,214.81, 136,523,482.61 and 54,879,402.03
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Solution
The fourth proportional to 98,918,214.81, 136,523,482.61 and 54,879,402.03 is: 75,742,643.58
Step by Step Solution
- Step 1: Write the proportion equation
98,918,214.81 : 136,523,482.61 = 54,879,402.03 : x - Step 2: Convert to fraction form
98,918,214.81/136,523,482.61 = 54,879,402.03/x - Step 3: Cross multiply
98,918,214.81x = 136,523,482.61 × 54,879,402.03 - Step 4: Simplify right side
98,918,214.81x = 7,492,327,088,415,506 - Step 5: Solve for x
x = 7,492,327,088,415,506/98,918,214.81 - Step 6: Final answer
x = 75,742,643.58
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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.