Home / 85,750.02-128,628.45-23,420.34

Finding the Fourth Proportional to 85,750.02, 128,628.45 and 23,420.34

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Solution

The fourth proportional to 85,750.02, 128,628.45 and 23,420.34 is: 35,131.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,750.02 : 128,628.45 = 23,420.34 : x
  2. Step 2: Convert to fraction form
    85,750.02/128,628.45 = 23,420.34/x
  3. Step 3: Cross multiply
    85,750.02x = 128,628.45 × 23,420.34
  4. Step 4: Simplify right side
    85,750.02x = 3,012,522,032.67
  5. Step 5: Solve for x
    x = 3,012,522,032.67/85,750.02
  6. Step 6: Final answer
    x = 35,131.44

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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.