Home / 65,420.16-90,189.12-44,165.76

Finding the Fourth Proportional to 65,420.16, 90,189.12 and 44,165.76

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Solution

The fourth proportional to 65,420.16, 90,189.12 and 44,165.76 is: 60,887.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,420.16 : 90,189.12 = 44,165.76 : x
  2. Step 2: Convert to fraction form
    65,420.16/90,189.12 = 44,165.76/x
  3. Step 3: Cross multiply
    65,420.16x = 90,189.12 × 44,165.76
  4. Step 4: Simplify right side
    65,420.16x = 3,983,271,028.53
  5. Step 5: Solve for x
    x = 3,983,271,028.53/65,420.16
  6. Step 6: Final answer
    x = 60,887.52

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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.