Home / 85,513.08-128,152.98-52,244.76

Finding the Fourth Proportional to 85,513.08, 128,152.98 and 52,244.76

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Solution

The fourth proportional to 85,513.08, 128,152.98 and 52,244.76 is: 78,295.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,513.08 : 128,152.98 = 52,244.76 : x
  2. Step 2: Convert to fraction form
    85,513.08/128,152.98 = 52,244.76/x
  3. Step 3: Cross multiply
    85,513.08x = 128,152.98 × 52,244.76
  4. Step 4: Simplify right side
    85,513.08x = 6,695,321,683.38
  5. Step 5: Solve for x
    x = 6,695,321,683.38/85,513.08
  6. Step 6: Final answer
    x = 78,295.88

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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.