Home / 64,781.84-89,291.40-51,329.36

Finding the Fourth Proportional to 64,781.84, 89,291.40 and 51,329.36

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Solution

The fourth proportional to 64,781.84, 89,291.40 and 51,329.36 is: 70,749.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,781.84 : 89,291.40 = 51,329.36 : x
  2. Step 2: Convert to fraction form
    64,781.84/89,291.40 = 51,329.36/x
  3. Step 3: Cross multiply
    64,781.84x = 89,291.40 × 51,329.36
  4. Step 4: Simplify right side
    64,781.84x = 4,583,270,415.50
  5. Step 5: Solve for x
    x = 4,583,270,415.50/64,781.84
  6. Step 6: Final answer
    x = 70,749.31

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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.