Home / 85,728.79-118,301.59-47,485.75

Finding the Fourth Proportional to 85,728.79, 118,301.59 and 47,485.75

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Solution

The fourth proportional to 85,728.79, 118,301.59 and 47,485.75 is: 65,528.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,728.79 : 118,301.59 = 47,485.75 : x
  2. Step 2: Convert to fraction form
    85,728.79/118,301.59 = 47,485.75/x
  3. Step 3: Cross multiply
    85,728.79x = 118,301.59 × 47,485.75
  4. Step 4: Simplify right side
    85,728.79x = 5,617,639,727.34
  5. Step 5: Solve for x
    x = 5,617,639,727.34/85,728.79
  6. Step 6: Final answer
    x = 65,528.04

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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.