Home / 57,001.28-78,642.50-33,108.30

Finding the Fourth Proportional to 57,001.28, 78,642.50 and 33,108.30

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Solution

The fourth proportional to 57,001.28, 78,642.50 and 33,108.30 is: 45,678.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,001.28 : 78,642.50 = 33,108.30 : x
  2. Step 2: Convert to fraction form
    57,001.28/78,642.50 = 33,108.30/x
  3. Step 3: Cross multiply
    57,001.28x = 78,642.50 × 33,108.30
  4. Step 4: Simplify right side
    57,001.28x = 2,603,719,482.75
  5. Step 5: Solve for x
    x = 2,603,719,482.75/57,001.28
  6. Step 6: Final answer
    x = 45,678.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.