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Finding the Fourth Proportional to 78,563.04, 108,475.92 and 48,389.92

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Solution

The fourth proportional to 78,563.04, 108,475.92 and 48,389.92 is: 66,814.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,563.04 : 108,475.92 = 48,389.92 : x
  2. Step 2: Convert to fraction form
    78,563.04/108,475.92 = 48,389.92/x
  3. Step 3: Cross multiply
    78,563.04x = 108,475.92 × 48,389.92
  4. Step 4: Simplify right side
    78,563.04x = 5,249,141,090.73
  5. Step 5: Solve for x
    x = 5,249,141,090.73/78,563.04
  6. Step 6: Final answer
    x = 66,814.38

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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.