Home / 90,988.38-136,483.79-38,434.77

Finding the Fourth Proportional to 90,988.38, 136,483.79 and 38,434.77

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Solution

The fourth proportional to 90,988.38, 136,483.79 and 38,434.77 is: 57,652.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,988.38 : 136,483.79 = 38,434.77 : x
  2. Step 2: Convert to fraction form
    90,988.38/136,483.79 = 38,434.77/x
  3. Step 3: Cross multiply
    90,988.38x = 136,483.79 × 38,434.77
  4. Step 4: Simplify right side
    90,988.38x = 5,245,722,885.20
  5. Step 5: Solve for x
    x = 5,245,722,885.20/90,988.38
  6. Step 6: Final answer
    x = 57,652.67

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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.