Finding the Fourth Proportional to 77,427,276.54, 106,852,461.04 and 42,143,377.46
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Solution
The fourth proportional to 77,427,276.54, 106,852,461.04 and 42,143,377.46 is: 58,159,395.49
Step by Step Solution
- Step 1: Write the proportion equation
77,427,276.54 : 106,852,461.04 = 42,143,377.46 : x - Step 2: Convert to fraction form
77,427,276.54/106,852,461.04 = 42,143,377.46/x - Step 3: Cross multiply
77,427,276.54x = 106,852,461.04 × 42,143,377.46 - Step 4: Simplify right side
77,427,276.54x = 4,503,123,598,021,387 - Step 5: Solve for x
x = 4,503,123,598,021,387/77,427,276.54 - Step 6: Final answer
x = 58,159,395.49
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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.