Finding the Fourth Proportional to 98,312,719.63, 135,671,840.80 and 53,659,103.11
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Solution
The fourth proportional to 98,312,719.63, 135,671,840.80 and 53,659,103.11 is: 74,049,719.33
Step by Step Solution
- Step 1: Write the proportion equation
98,312,719.63 : 135,671,840.80 = 53,659,103.11 : x - Step 2: Convert to fraction form
98,312,719.63/135,671,840.80 = 53,659,103.11/x - Step 3: Cross multiply
98,312,719.63x = 135,671,840.80 × 53,659,103.11 - Step 4: Simplify right side
98,312,719.63x = 7,280,029,294,900,396 - Step 5: Solve for x
x = 7,280,029,294,900,396/98,312,719.63 - Step 6: Final answer
x = 74,049,719.33
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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.