Home / 85,751.02-128,629.95-23,421.34

Finding the Fourth Proportional to 85,751.02, 128,629.95 and 23,421.34

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Solution

The fourth proportional to 85,751.02, 128,629.95 and 23,421.34 is: 35,132.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,751.02 : 128,629.95 = 23,421.34 : x
  2. Step 2: Convert to fraction form
    85,751.02/128,629.95 = 23,421.34/x
  3. Step 3: Cross multiply
    85,751.02x = 128,629.95 × 23,421.34
  4. Step 4: Simplify right side
    85,751.02x = 3,012,685,793.13
  5. Step 5: Solve for x
    x = 3,012,685,793.13/85,751.02
  6. Step 6: Final answer
    x = 35,132.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.