Finding the Fourth Proportional to 97,878.95, 135,070.68 and 57,040.47
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Solution
The fourth proportional to 97,878.95, 135,070.68 and 57,040.47 is: 78,714.53
Step by Step Solution
- Step 1: Write the proportion equation
97,878.95 : 135,070.68 = 57,040.47 : x - Step 2: Convert to fraction form
97,878.95/135,070.68 = 57,040.47/x - Step 3: Cross multiply
97,878.95x = 135,070.68 × 57,040.47 - Step 4: Simplify right side
97,878.95x = 7,704,495,070.42 - Step 5: Solve for x
x = 7,704,495,070.42/97,878.95 - Step 6: Final answer
x = 78,714.53
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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.