Home / 64,987.36-89,680.32-36,307.84

Finding the Fourth Proportional to 64,987.36, 89,680.32 and 36,307.84

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Solution

The fourth proportional to 64,987.36, 89,680.32 and 36,307.84 is: 50,103.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,987.36 : 89,680.32 = 36,307.84 : x
  2. Step 2: Convert to fraction form
    64,987.36/89,680.32 = 36,307.84/x
  3. Step 3: Cross multiply
    64,987.36x = 89,680.32 × 36,307.84
  4. Step 4: Simplify right side
    64,987.36x = 3,256,098,709.71
  5. Step 5: Solve for x
    x = 3,256,098,709.71/64,987.36
  6. Step 6: Final answer
    x = 50,103.57

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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.