Home / 85,981.88-118,649.20-47,739.45

Finding the Fourth Proportional to 85,981.88, 118,649.20 and 47,739.45

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Solution

The fourth proportional to 85,981.88, 118,649.20 and 47,739.45 is: 65,877.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,981.88 : 118,649.20 = 47,739.45 : x
  2. Step 2: Convert to fraction form
    85,981.88/118,649.20 = 47,739.45/x
  3. Step 3: Cross multiply
    85,981.88x = 118,649.20 × 47,739.45
  4. Step 4: Simplify right side
    85,981.88x = 5,664,246,957.69
  5. Step 5: Solve for x
    x = 5,664,246,957.69/85,981.88
  6. Step 6: Final answer
    x = 65,877.22

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1.5x scale

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.