Finding the Fourth Proportional to 83,871,682.88, 115,778,633.46 and 56,385,554.36
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Solution
The fourth proportional to 83,871,682.88, 115,778,633.46 and 56,385,554.36 is: 77,836,072.99
Step by Step Solution
- Step 1: Write the proportion equation
83,871,682.88 : 115,778,633.46 = 56,385,554.36 : x - Step 2: Convert to fraction form
83,871,682.88/115,778,633.46 = 56,385,554.36/x - Step 3: Cross multiply
83,871,682.88x = 115,778,633.46 × 56,385,554.36 - Step 4: Simplify right side
83,871,682.88x = 6,528,242,430,685,344 - Step 5: Solve for x
x = 6,528,242,430,685,344/83,871,682.88 - Step 6: Final answer
x = 77,836,072.99
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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.