Finding the Fourth Proportional to 77,670,708.66, 107,225,877.15 and 56,739,237.84
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Solution
The fourth proportional to 77,670,708.66, 107,225,877.15 and 56,739,237.84 is: 78,329,587.19
Step by Step Solution
- Step 1: Write the proportion equation
77,670,708.66 : 107,225,877.15 = 56,739,237.84 : x - Step 2: Convert to fraction form
77,670,708.66/107,225,877.15 = 56,739,237.84/x - Step 3: Cross multiply
77,670,708.66x = 107,225,877.15 × 56,739,237.84 - Step 4: Simplify right side
77,670,708.66x = 6,083,914,546,216,472 - Step 5: Solve for x
x = 6,083,914,546,216,472/77,670,708.66 - Step 6: Final answer
x = 78,329,587.19
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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.