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Finding the Fourth Proportional to 85,575.86, 128,316.37 and 35,010.39

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Solution

The fourth proportional to 85,575.86, 128,316.37 and 35,010.39 is: 52,496.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,575.86 : 128,316.37 = 35,010.39 : x
  2. Step 2: Convert to fraction form
    85,575.86/128,316.37 = 35,010.39/x
  3. Step 3: Cross multiply
    85,575.86x = 128,316.37 × 35,010.39
  4. Step 4: Simplify right side
    85,575.86x = 4,492,406,157.08
  5. Step 5: Solve for x
    x = 4,492,406,157.08/85,575.86
  6. Step 6: Final answer
    x = 52,496.18

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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.