Home / 90,981.86-136,549.47-38,429.06

Finding the Fourth Proportional to 90,981.86, 136,549.47 and 38,429.06

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Solution

The fourth proportional to 90,981.86, 136,549.47 and 38,429.06 is: 57,675.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,981.86 : 136,549.47 = 38,429.06 : x
  2. Step 2: Convert to fraction form
    90,981.86/136,549.47 = 38,429.06/x
  3. Step 3: Cross multiply
    90,981.86x = 136,549.47 × 38,429.06
  4. Step 4: Simplify right side
    90,981.86x = 5,247,467,775.60
  5. Step 5: Solve for x
    x = 5,247,467,775.60/90,981.86
  6. Step 6: Final answer
    x = 57,675.98

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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.