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Finding the Fourth Proportional to 64,050.72, 96,074 and 28,990.40

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Solution

The fourth proportional to 64,050.72, 96,074 and 28,990.40 is: 43,484.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,050.72 : 96,074 = 28,990.40 : x
  2. Step 2: Convert to fraction form
    64,050.72/96,074 = 28,990.40/x
  3. Step 3: Cross multiply
    64,050.72x = 96,074 × 28,990.40
  4. Step 4: Simplify right side
    64,050.72x = 2,785,223,689.60
  5. Step 5: Solve for x
    x = 2,785,223,689.60/64,050.72
  6. Step 6: Final answer
    x = 43,484.66

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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.