Home / 87,629.79-120,929.63-48,870.06

Finding the Fourth Proportional to 87,629.79, 120,929.63 and 48,870.06

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Solution

The fourth proportional to 87,629.79, 120,929.63 and 48,870.06 is: 67,440.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,629.79 : 120,929.63 = 48,870.06 : x
  2. Step 2: Convert to fraction form
    87,629.79/120,929.63 = 48,870.06/x
  3. Step 3: Cross multiply
    87,629.79x = 120,929.63 × 48,870.06
  4. Step 4: Simplify right side
    87,629.79x = 5,909,838,328.50
  5. Step 5: Solve for x
    x = 5,909,838,328.50/87,629.79
  6. Step 6: Final answer
    x = 67,440.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.