Home / 85,501.28-128,254.53-29,340.60

Finding the Fourth Proportional to 85,501.28, 128,254.53 and 29,340.60

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Solution

The fourth proportional to 85,501.28, 128,254.53 and 29,340.60 is: 44,011.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,501.28 : 128,254.53 = 29,340.60 : x
  2. Step 2: Convert to fraction form
    85,501.28/128,254.53 = 29,340.60/x
  3. Step 3: Cross multiply
    85,501.28x = 128,254.53 × 29,340.60
  4. Step 4: Simplify right side
    85,501.28x = 3,763,064,862.92
  5. Step 5: Solve for x
    x = 3,763,064,862.92/85,501.28
  6. Step 6: Final answer
    x = 44,011.80

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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.