Home / 90,710.20-136,032.90-31,547.80

Finding the Fourth Proportional to 90,710.20, 136,032.90 and 31,547.80

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Solution

The fourth proportional to 90,710.20, 136,032.90 and 31,547.80 is: 47,310.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,710.20 : 136,032.90 = 31,547.80 : x
  2. Step 2: Convert to fraction form
    90,710.20/136,032.90 = 31,547.80/x
  3. Step 3: Cross multiply
    90,710.20x = 136,032.90 × 31,547.80
  4. Step 4: Simplify right side
    90,710.20x = 4,291,538,722.62
  5. Step 5: Solve for x
    x = 4,291,538,722.62/90,710.20
  6. Step 6: Final answer
    x = 47,310.43

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1.5x scale

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.