Finding the Fourth Proportional to 84,185,603.74, 115,332,347.21 and 81,038,133.18
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Solution
The fourth proportional to 84,185,603.74, 115,332,347.21 and 81,038,133.18 is: 111,020,384.70
Step by Step Solution
- Step 1: Write the proportion equation
84,185,603.74 : 115,332,347.21 = 81,038,133.18 : x - Step 2: Convert to fraction form
84,185,603.74/115,332,347.21 = 81,038,133.18/x - Step 3: Cross multiply
84,185,603.74x = 115,332,347.21 × 81,038,133.18 - Step 4: Simplify right side
84,185,603.74x = 9,346,318,113,443,944 - Step 5: Solve for x
x = 9,346,318,113,443,944/84,185,603.74 - Step 6: Final answer
x = 111,020,384.70
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.