Finding the Fourth Proportional to 77,555,071.17, 107,024,720.63 and 42,750,999.99
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Solution
The fourth proportional to 77,555,071.17, 107,024,720.63 and 42,750,999.99 is: 58,995,675.74
Step by Step Solution
- Step 1: Write the proportion equation
77,555,071.17 : 107,024,720.63 = 42,750,999.99 : x - Step 2: Convert to fraction form
77,555,071.17/107,024,720.63 = 42,750,999.99/x - Step 3: Cross multiply
77,555,071.17x = 107,024,720.63 × 42,750,999.99 - Step 4: Simplify right side
77,555,071.17x = 4,575,413,830,369,128 - Step 5: Solve for x
x = 4,575,413,830,369,128/77,555,071.17 - Step 6: Final answer
x = 58,995,675.74
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1.5x scale
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.