Home / 85,695.04-128,559.92-30,329.92

Finding the Fourth Proportional to 85,695.04, 128,559.92 and 30,329.92

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Solution

The fourth proportional to 85,695.04, 128,559.92 and 30,329.92 is: 45,501.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,695.04 : 128,559.92 = 30,329.92 : x
  2. Step 2: Convert to fraction form
    85,695.04/128,559.92 = 30,329.92/x
  3. Step 3: Cross multiply
    85,695.04x = 128,559.92 × 30,329.92
  4. Step 4: Simplify right side
    85,695.04x = 3,899,212,088.81
  5. Step 5: Solve for x
    x = 3,899,212,088.81/85,695.04
  6. Step 6: Final answer
    x = 45,501.02

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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.