Home / 65,931.53-90,979.65-39,069.50

Finding the Fourth Proportional to 65,931.53, 90,979.65 and 39,069.50

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Solution

The fourth proportional to 65,931.53, 90,979.65 and 39,069.50 is: 53,912.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,931.53 : 90,979.65 = 39,069.50 : x
  2. Step 2: Convert to fraction form
    65,931.53/90,979.65 = 39,069.50/x
  3. Step 3: Cross multiply
    65,931.53x = 90,979.65 × 39,069.50
  4. Step 4: Simplify right side
    65,931.53x = 3,554,528,980.78
  5. Step 5: Solve for x
    x = 3,554,528,980.78/65,931.53
  6. Step 6: Final answer
    x = 53,912.43

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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.