Finding the Fourth Proportional to 76,926,730.80, 115,292,118.60 and 31,437,130.80
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Solution
The fourth proportional to 76,926,730.80, 115,292,118.60 and 31,437,130.80 is: 47,115,656.35
Step by Step Solution
- Step 1: Write the proportion equation
76,926,730.80 : 115,292,118.60 = 31,437,130.80 : x - Step 2: Convert to fraction form
76,926,730.80/115,292,118.60 = 31,437,130.80/x - Step 3: Cross multiply
76,926,730.80x = 115,292,118.60 × 31,437,130.80 - Step 4: Simplify right side
76,926,730.80x = 3,624,453,412,637,313 - Step 5: Solve for x
x = 3,624,453,412,637,313/76,926,730.80 - Step 6: Final answer
x = 47,115,656.35
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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.