Home / 85,958.12-128,937-48,501.20

Finding the Fourth Proportional to 85,958.12, 128,937 and 48,501.20

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Solution

The fourth proportional to 85,958.12, 128,937 and 48,501.20 is: 72,751.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,958.12 : 128,937 = 48,501.20 : x
  2. Step 2: Convert to fraction form
    85,958.12/128,937 = 48,501.20/x
  3. Step 3: Cross multiply
    85,958.12x = 128,937 × 48,501.20
  4. Step 4: Simplify right side
    85,958.12x = 6,253,599,224.40
  5. Step 5: Solve for x
    x = 6,253,599,224.40/85,958.12
  6. Step 6: Final answer
    x = 72,751.70

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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.