Home / 91,037.53-136,575.78-31,875.13

Finding the Fourth Proportional to 91,037.53, 136,575.78 and 31,875.13

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Solution

The fourth proportional to 91,037.53, 136,575.78 and 31,875.13 is: 47,819.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,037.53 : 136,575.78 = 31,875.13 : x
  2. Step 2: Convert to fraction form
    91,037.53/136,575.78 = 31,875.13/x
  3. Step 3: Cross multiply
    91,037.53x = 136,575.78 × 31,875.13
  4. Step 4: Simplify right side
    91,037.53x = 4,353,370,742.35
  5. Step 5: Solve for x
    x = 4,353,370,742.35/91,037.53
  6. Step 6: Final answer
    x = 47,819.52

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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.