Finding the Fourth Proportional to 105,681.95, 145,846.68 and 57,937.31
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Solution
The fourth proportional to 105,681.95, 145,846.68 and 57,937.31 is: 79,956.55
Step by Step Solution
- Step 1: Write the proportion equation
105,681.95 : 145,846.68 = 57,937.31 : x - Step 2: Convert to fraction form
105,681.95/145,846.68 = 57,937.31/x - Step 3: Cross multiply
105,681.95x = 145,846.68 × 57,937.31 - Step 4: Simplify right side
105,681.95x = 8,449,964,311.63 - Step 5: Solve for x
x = 8,449,964,311.63/105,681.95 - Step 6: Final answer
x = 79,956.55
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1.5x scale
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.