Home / 85,435.47-128,165.49-26,276.13

Finding the Fourth Proportional to 85,435.47, 128,165.49 and 26,276.13

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Solution

The fourth proportional to 85,435.47, 128,165.49 and 26,276.13 is: 39,417.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,435.47 : 128,165.49 = 26,276.13 : x
  2. Step 2: Convert to fraction form
    85,435.47/128,165.49 = 26,276.13/x
  3. Step 3: Cross multiply
    85,435.47x = 128,165.49 × 26,276.13
  4. Step 4: Simplify right side
    85,435.47x = 3,367,693,076.75
  5. Step 5: Solve for x
    x = 3,367,693,076.75/85,435.47
  6. Step 6: Final answer
    x = 39,417.97

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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.