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Finding the Fourth Proportional to 64,810.44, 89,455.05 and 42,205.86

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Solution

The fourth proportional to 64,810.44, 89,455.05 and 42,205.86 is: 58,254.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,810.44 : 89,455.05 = 42,205.86 : x
  2. Step 2: Convert to fraction form
    64,810.44/89,455.05 = 42,205.86/x
  3. Step 3: Cross multiply
    64,810.44x = 89,455.05 × 42,205.86
  4. Step 4: Simplify right side
    64,810.44x = 3,775,527,316.59
  5. Step 5: Solve for x
    x = 3,775,527,316.59/64,810.44
  6. Step 6: Final answer
    x = 58,254.92

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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.