Home / 65,941.12-90,984.36-39,070.20

Finding the Fourth Proportional to 65,941.12, 90,984.36 and 39,070.20

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Solution

The fourth proportional to 65,941.12, 90,984.36 and 39,070.20 is: 53,908.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,941.12 : 90,984.36 = 39,070.20 : x
  2. Step 2: Convert to fraction form
    65,941.12/90,984.36 = 39,070.20/x
  3. Step 3: Cross multiply
    65,941.12x = 90,984.36 × 39,070.20
  4. Step 4: Simplify right side
    65,941.12x = 3,554,777,142.07
  5. Step 5: Solve for x
    x = 3,554,777,142.07/65,941.12
  6. Step 6: Final answer
    x = 53,908.35

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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.