Finding the Fourth Proportional to 42,486,307,272, 58,638,778,649.28 and 25,340,259,637.44
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Solution
The fourth proportional to 42,486,307,272, 58,638,778,649.28 and 25,340,259,637.44 is: 34,974,135,696.99
Step by Step Solution
- Step 1: Write the proportion equation
42,486,307,272 : 58,638,778,649.28 = 25,340,259,637.44 : x - Step 2: Convert to fraction form
42,486,307,272/58,638,778,649.28 = 25,340,259,637.44/x - Step 3: Cross multiply
42,486,307,272x = 58,638,778,649.28 × 25,340,259,637.44 - Step 4: Simplify right side
42,486,307,272x = 1,485,921,875,795,128,352,768 - Step 5: Solve for x
x = 1,485,921,875,795,128,352,768/42,486,307,272 - Step 6: Final answer
x = 34,974,135,696.99
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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.