Home / 91,012.64-136,580.40-31,848.81

Finding the Fourth Proportional to 91,012.64, 136,580.40 and 31,848.81

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Solution

The fourth proportional to 91,012.64, 136,580.40 and 31,848.81 is: 47,794.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,012.64 : 136,580.40 = 31,848.81 : x
  2. Step 2: Convert to fraction form
    91,012.64/136,580.40 = 31,848.81/x
  3. Step 3: Cross multiply
    91,012.64x = 136,580.40 × 31,848.81
  4. Step 4: Simplify right side
    91,012.64x = 4,349,923,209.32
  5. Step 5: Solve for x
    x = 4,349,923,209.32/91,012.64
  6. Step 6: Final answer
    x = 47,794.72

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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.