Home / 42,856.05-64,325.54-20,685.03

Finding the Fourth Proportional to 42,856.05, 64,325.54 and 20,685.03

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Solution

The fourth proportional to 42,856.05, 64,325.54 and 20,685.03 is: 31,047.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,856.05 : 64,325.54 = 20,685.03 : x
  2. Step 2: Convert to fraction form
    42,856.05/64,325.54 = 20,685.03/x
  3. Step 3: Cross multiply
    42,856.05x = 64,325.54 × 20,685.03
  4. Step 4: Simplify right side
    42,856.05x = 1,330,575,621.24
  5. Step 5: Solve for x
    x = 1,330,575,621.24/42,856.05
  6. Step 6: Final answer
    x = 31,047.56

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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.