Home / 85,457.08-128,164.02-25,471.72

Finding the Fourth Proportional to 85,457.08, 128,164.02 and 25,471.72

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Solution

The fourth proportional to 85,457.08, 128,164.02 and 25,471.72 is: 38,201.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,457.08 : 128,164.02 = 25,471.72 : x
  2. Step 2: Convert to fraction form
    85,457.08/128,164.02 = 25,471.72/x
  3. Step 3: Cross multiply
    85,457.08x = 128,164.02 × 25,471.72
  4. Step 4: Simplify right side
    85,457.08x = 3,264,558,031.51
  5. Step 5: Solve for x
    x = 3,264,558,031.51/85,457.08
  6. Step 6: Final answer
    x = 38,201.14

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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.