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Finding the Fourth Proportional to 85,599.90, 128,421.72 and 32,995.26

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Solution

The fourth proportional to 85,599.90, 128,421.72 and 32,995.26 is: 49,501.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,599.90 : 128,421.72 = 32,995.26 : x
  2. Step 2: Convert to fraction form
    85,599.90/128,421.72 = 32,995.26/x
  3. Step 3: Cross multiply
    85,599.90x = 128,421.72 × 32,995.26
  4. Step 4: Simplify right side
    85,599.90x = 4,237,308,041.05
  5. Step 5: Solve for x
    x = 4,237,308,041.05/85,599.90
  6. Step 6: Final answer
    x = 49,501.32

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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.