Home / 91,109.28-125,678.12-54,785.46

Finding the Fourth Proportional to 91,109.28, 125,678.12 and 54,785.46

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Solution

The fourth proportional to 91,109.28, 125,678.12 and 54,785.46 is: 75,572.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,109.28 : 125,678.12 = 54,785.46 : x
  2. Step 2: Convert to fraction form
    91,109.28/125,678.12 = 54,785.46/x
  3. Step 3: Cross multiply
    91,109.28x = 125,678.12 × 54,785.46
  4. Step 4: Simplify right side
    91,109.28x = 6,885,333,616.14
  5. Step 5: Solve for x
    x = 6,885,333,616.14/91,109.28
  6. Step 6: Final answer
    x = 75,572.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.