Home / 64,701.90-89,064.09-55,778.94

Finding the Fourth Proportional to 64,701.90, 89,064.09 and 55,778.94

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Solution

The fourth proportional to 64,701.90, 89,064.09 and 55,778.94 is: 76,781.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,701.90 : 89,064.09 = 55,778.94 : x
  2. Step 2: Convert to fraction form
    64,701.90/89,064.09 = 55,778.94/x
  3. Step 3: Cross multiply
    64,701.90x = 89,064.09 × 55,778.94
  4. Step 4: Simplify right side
    64,701.90x = 4,967,900,532.26
  5. Step 5: Solve for x
    x = 4,967,900,532.26/64,701.90
  6. Step 6: Final answer
    x = 76,781.37

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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.