Home / 84,317.10-126,475.65-21,987.60

Finding the Fourth Proportional to 84,317.10, 126,475.65 and 21,987.60

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Solution

The fourth proportional to 84,317.10, 126,475.65 and 21,987.60 is: 32,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,317.10 : 126,475.65 = 21,987.60 : x
  2. Step 2: Convert to fraction form
    84,317.10/126,475.65 = 21,987.60/x
  3. Step 3: Cross multiply
    84,317.10x = 126,475.65 × 21,987.60
  4. Step 4: Simplify right side
    84,317.10x = 2,780,896,001.94
  5. Step 5: Solve for x
    x = 2,780,896,001.94/84,317.10
  6. Step 6: Final answer
    x = 32,981.40

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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.