Home / 85,445.38-128,184.47-38,698.25

Finding the Fourth Proportional to 85,445.38, 128,184.47 and 38,698.25

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Solution

The fourth proportional to 85,445.38, 128,184.47 and 38,698.25 is: 58,054.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,445.38 : 128,184.47 = 38,698.25 : x
  2. Step 2: Convert to fraction form
    85,445.38/128,184.47 = 38,698.25/x
  3. Step 3: Cross multiply
    85,445.38x = 128,184.47 × 38,698.25
  4. Step 4: Simplify right side
    85,445.38x = 4,960,514,472.69
  5. Step 5: Solve for x
    x = 4,960,514,472.69/85,445.38
  6. Step 6: Final answer
    x = 58,054.80

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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.