Finding the Fourth Proportional to 84,528,018.20, 126,792,027.30 and 78,817,323.80
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Solution
The fourth proportional to 84,528,018.20, 126,792,027.30 and 78,817,323.80 is: 118,225,985.70
Step by Step Solution
- Step 1: Write the proportion equation
84,528,018.20 : 126,792,027.30 = 78,817,323.80 : x - Step 2: Convert to fraction form
84,528,018.20/126,792,027.30 = 78,817,323.80/x - Step 3: Cross multiply
84,528,018.20x = 126,792,027.30 × 78,817,323.80 - Step 4: Simplify right side
84,528,018.20x = 9,993,408,270,962,540 - Step 5: Solve for x
x = 9,993,408,270,962,540/84,528,018.20 - Step 6: Final answer
x = 118,225,985.70
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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.