Home / 71,461.02-98,622.12-39,640.20

Finding the Fourth Proportional to 71,461.02, 98,622.12 and 39,640.20

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Solution

The fourth proportional to 71,461.02, 98,622.12 and 39,640.20 is: 54,706.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,461.02 : 98,622.12 = 39,640.20 : x
  2. Step 2: Convert to fraction form
    71,461.02/98,622.12 = 39,640.20/x
  3. Step 3: Cross multiply
    71,461.02x = 98,622.12 × 39,640.20
  4. Step 4: Simplify right side
    71,461.02x = 3,909,400,561.22
  5. Step 5: Solve for x
    x = 3,909,400,561.22/71,461.02
  6. Step 6: Final answer
    x = 54,706.76

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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.