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Finding the Fourth Proportional to 64,632.94, 89,157.04 and 38,784.81

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Solution

The fourth proportional to 64,632.94, 89,157.04 and 38,784.81 is: 53,501.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,632.94 : 89,157.04 = 38,784.81 : x
  2. Step 2: Convert to fraction form
    64,632.94/89,157.04 = 38,784.81/x
  3. Step 3: Cross multiply
    64,632.94x = 89,157.04 × 38,784.81
  4. Step 4: Simplify right side
    64,632.94x = 3,457,938,216.85
  5. Step 5: Solve for x
    x = 3,457,938,216.85/64,632.94
  6. Step 6: Final answer
    x = 53,501.17

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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.