Home / 90,746.60-136,055.10-51,315.80

Finding the Fourth Proportional to 90,746.60, 136,055.10 and 51,315.80

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Solution

The fourth proportional to 90,746.60, 136,055.10 and 51,315.80 is: 76,937.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,746.60 : 136,055.10 = 51,315.80 : x
  2. Step 2: Convert to fraction form
    90,746.60/136,055.10 = 51,315.80/x
  3. Step 3: Cross multiply
    90,746.60x = 136,055.10 × 51,315.80
  4. Step 4: Simplify right side
    90,746.60x = 6,981,776,300.58
  5. Step 5: Solve for x
    x = 6,981,776,300.58/90,746.60
  6. Step 6: Final answer
    x = 76,937.06

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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.