Finding the Fourth Proportional to 85,414,501.80, 128,121,752.70 and 39,356,281.80
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Solution
The fourth proportional to 85,414,501.80, 128,121,752.70 and 39,356,281.80 is: 59,034,422.70
Step by Step Solution
- Step 1: Write the proportion equation
85,414,501.80 : 128,121,752.70 = 39,356,281.80 : x - Step 2: Convert to fraction form
85,414,501.80/128,121,752.70 = 39,356,281.80/x - Step 3: Cross multiply
85,414,501.80x = 128,121,752.70 × 39,356,281.80 - Step 4: Simplify right side
85,414,501.80x = 5,042,395,803,971,111 - Step 5: Solve for x
x = 5,042,395,803,971,111/85,414,501.80 - Step 6: Final answer
x = 59,034,422.70
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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.