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Finding the Fourth Proportional to 85,354.26, 128,088.52 and 35,434.40

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Solution

The fourth proportional to 85,354.26, 128,088.52 and 35,434.40 is: 53,175.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,354.26 : 128,088.52 = 35,434.40 : x
  2. Step 2: Convert to fraction form
    85,354.26/128,088.52 = 35,434.40/x
  3. Step 3: Cross multiply
    85,354.26x = 128,088.52 × 35,434.40
  4. Step 4: Simplify right side
    85,354.26x = 4,538,739,323.38
  5. Step 5: Solve for x
    x = 4,538,739,323.38/85,354.26
  6. Step 6: Final answer
    x = 53,175.31

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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.