Home / 85,762.20-128,643.30-23,432.70

Finding the Fourth Proportional to 85,762.20, 128,643.30 and 23,432.70

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Solution

The fourth proportional to 85,762.20, 128,643.30 and 23,432.70 is: 35,149.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,762.20 : 128,643.30 = 23,432.70 : x
  2. Step 2: Convert to fraction form
    85,762.20/128,643.30 = 23,432.70/x
  3. Step 3: Cross multiply
    85,762.20x = 128,643.30 × 23,432.70
  4. Step 4: Simplify right side
    85,762.20x = 3,014,459,855.91
  5. Step 5: Solve for x
    x = 3,014,459,855.91/85,762.20
  6. Step 6: Final answer
    x = 35,149.05

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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.