Finding the Fourth Proportional to 85,420.14, 128,130.68 and 56,024.14
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Solution
The fourth proportional to 85,420.14, 128,130.68 and 56,024.14 is: 84,036.52
Step by Step Solution
- Step 1: Write the proportion equation
85,420.14 : 128,130.68 = 56,024.14 : x - Step 2: Convert to fraction form
85,420.14/128,130.68 = 56,024.14/x - Step 3: Cross multiply
85,420.14x = 128,130.68 × 56,024.14 - Step 4: Simplify right side
85,420.14x = 7,178,411,154.62 - Step 5: Solve for x
x = 7,178,411,154.62/85,420.14 - Step 6: Final answer
x = 84,036.52
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.