Finding the Fourth Proportional to 77,102,369.55, 115,653,947.99 and 25,984,831.23
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Solution
The fourth proportional to 77,102,369.55, 115,653,947.99 and 25,984,831.23 is: 38,977,379.52
Step by Step Solution
- Step 1: Write the proportion equation
77,102,369.55 : 115,653,947.99 = 25,984,831.23 : x - Step 2: Convert to fraction form
77,102,369.55/115,653,947.99 = 25,984,831.23/x - Step 3: Cross multiply
77,102,369.55x = 115,653,947.99 × 25,984,831.23 - Step 4: Simplify right side
77,102,369.55x = 3,005,248,319,473,423.50 - Step 5: Solve for x
x = 3,005,248,319,473,423.50/77,102,369.55 - Step 6: Final answer
x = 38,977,379.52
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1.5x scale
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.