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Finding the Fourth Proportional to 65,345.88, 90,187.38 and 37,045.56

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Solution

The fourth proportional to 65,345.88, 90,187.38 and 37,045.56 is: 51,128.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,345.88 : 90,187.38 = 37,045.56 : x
  2. Step 2: Convert to fraction form
    65,345.88/90,187.38 = 37,045.56/x
  3. Step 3: Cross multiply
    65,345.88x = 90,187.38 × 37,045.56
  4. Step 4: Simplify right side
    65,345.88x = 3,341,041,997.03
  5. Step 5: Solve for x
    x = 3,341,041,997.03/65,345.88
  6. Step 6: Final answer
    x = 51,128.58

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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.