Home / 64,984.20-89,684.18-39,484.65

Finding the Fourth Proportional to 64,984.20, 89,684.18 and 39,484.65

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Solution

The fourth proportional to 64,984.20, 89,684.18 and 39,484.65 is: 54,492.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,984.20 : 89,684.18 = 39,484.65 : x
  2. Step 2: Convert to fraction form
    64,984.20/89,684.18 = 39,484.65/x
  3. Step 3: Cross multiply
    64,984.20x = 89,684.18 × 39,484.65
  4. Step 4: Simplify right side
    64,984.20x = 3,541,148,457.84
  5. Step 5: Solve for x
    x = 3,541,148,457.84/64,984.20
  6. Step 6: Final answer
    x = 54,492.45

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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.