Finding the Fourth Proportional to 77,046,987.52, 106,324,817.08 and 42,238,931.12
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Solution
The fourth proportional to 77,046,987.52, 106,324,817.08 and 42,238,931.12 is: 58,289,710.86
Step by Step Solution
- Step 1: Write the proportion equation
77,046,987.52 : 106,324,817.08 = 42,238,931.12 : x - Step 2: Convert to fraction form
77,046,987.52/106,324,817.08 = 42,238,931.12/x - Step 3: Cross multiply
77,046,987.52x = 106,324,817.08 × 42,238,931.12 - Step 4: Simplify right side
77,046,987.52x = 4,491,046,624,988,719 - Step 5: Solve for x
x = 4,491,046,624,988,719/77,046,987.52 - Step 6: Final answer
x = 58,289,710.86
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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.