Home / 85,535.10-128,305.31-29,374.47

Finding the Fourth Proportional to 85,535.10, 128,305.31 and 29,374.47

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Solution

The fourth proportional to 85,535.10, 128,305.31 and 29,374.47 is: 44,062.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,535.10 : 128,305.31 = 29,374.47 : x
  2. Step 2: Convert to fraction form
    85,535.10/128,305.31 = 29,374.47/x
  3. Step 3: Cross multiply
    85,535.10x = 128,305.31 × 29,374.47
  4. Step 4: Simplify right side
    85,535.10x = 3,768,900,332.56
  5. Step 5: Solve for x
    x = 3,768,900,332.56/85,535.10
  6. Step 6: Final answer
    x = 44,062.62

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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.