Home / 85,923.36-128,910-38,527.92

Finding the Fourth Proportional to 85,923.36, 128,910 and 38,527.92

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Solution

The fourth proportional to 85,923.36, 128,910 and 38,527.92 is: 57,803.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,923.36 : 128,910 = 38,527.92 : x
  2. Step 2: Convert to fraction form
    85,923.36/128,910 = 38,527.92/x
  3. Step 3: Cross multiply
    85,923.36x = 128,910 × 38,527.92
  4. Step 4: Simplify right side
    85,923.36x = 4,966,634,167.20
  5. Step 5: Solve for x
    x = 4,966,634,167.20/85,923.36
  6. Step 6: Final answer
    x = 57,803.07

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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.