Home / 85,534.40-128,417.96-48,120.81

Finding the Fourth Proportional to 85,534.40, 128,417.96 and 48,120.81

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Solution

The fourth proportional to 85,534.40, 128,417.96 and 48,120.81 is: 72,246.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,534.40 : 128,417.96 = 48,120.81 : x
  2. Step 2: Convert to fraction form
    85,534.40/128,417.96 = 48,120.81/x
  3. Step 3: Cross multiply
    85,534.40x = 128,417.96 × 48,120.81
  4. Step 4: Simplify right side
    85,534.40x = 6,179,576,253.75
  5. Step 5: Solve for x
    x = 6,179,576,253.75/85,534.40
  6. Step 6: Final answer
    x = 72,246.68

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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.