Home / 65,735.02-90,721.53-38,145.76

Finding the Fourth Proportional to 65,735.02, 90,721.53 and 38,145.76

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Solution

The fourth proportional to 65,735.02, 90,721.53 and 38,145.76 is: 52,645.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,735.02 : 90,721.53 = 38,145.76 : x
  2. Step 2: Convert to fraction form
    65,735.02/90,721.53 = 38,145.76/x
  3. Step 3: Cross multiply
    65,735.02x = 90,721.53 × 38,145.76
  4. Step 4: Simplify right side
    65,735.02x = 3,460,641,256.61
  5. Step 5: Solve for x
    x = 3,460,641,256.61/65,735.02
  6. Step 6: Final answer
    x = 52,645.33

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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.