Finding the Fourth Proportional to 93,420.64, 128,924.10 and 53,138.08
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Solution
The fourth proportional to 93,420.64, 128,924.10 and 53,138.08 is: 73,332.61
Step by Step Solution
- Step 1: Write the proportion equation
93,420.64 : 128,924.10 = 53,138.08 : x - Step 2: Convert to fraction form
93,420.64/128,924.10 = 53,138.08/x - Step 3: Cross multiply
93,420.64x = 128,924.10 × 53,138.08 - Step 4: Simplify right side
93,420.64x = 6,850,779,139.73 - Step 5: Solve for x
x = 6,850,779,139.73/93,420.64 - Step 6: Final answer
x = 73,332.61
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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.