Home / 85,728.16-118,300.74-47,485.12

Finding the Fourth Proportional to 85,728.16, 118,300.74 and 47,485.12

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Solution

The fourth proportional to 85,728.16, 118,300.74 and 47,485.12 is: 65,527.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,728.16 : 118,300.74 = 47,485.12 : x
  2. Step 2: Convert to fraction form
    85,728.16/118,300.74 = 47,485.12/x
  3. Step 3: Cross multiply
    85,728.16x = 118,300.74 × 47,485.12
  4. Step 4: Simplify right side
    85,728.16x = 5,617,524,834.99
  5. Step 5: Solve for x
    x = 5,617,524,834.99/85,728.16
  6. Step 6: Final answer
    x = 65,527.19

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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.