Home / 81,125.90-121,700.38-24,970.69

Finding the Fourth Proportional to 81,125.90, 121,700.38 and 24,970.69

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Solution

The fourth proportional to 81,125.90, 121,700.38 and 24,970.69 is: 37,459.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,125.90 : 121,700.38 = 24,970.69 : x
  2. Step 2: Convert to fraction form
    81,125.90/121,700.38 = 24,970.69/x
  3. Step 3: Cross multiply
    81,125.90x = 121,700.38 × 24,970.69
  4. Step 4: Simplify right side
    81,125.90x = 3,038,942,095.18
  5. Step 5: Solve for x
    x = 3,038,942,095.18/81,125.90
  6. Step 6: Final answer
    x = 37,459.58

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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.