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Finding the Fourth Proportional to 65,678.83, 90,637.37 and 37,386.34

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Solution

The fourth proportional to 65,678.83, 90,637.37 and 37,386.34 is: 51,593.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,678.83 : 90,637.37 = 37,386.34 : x
  2. Step 2: Convert to fraction form
    65,678.83/90,637.37 = 37,386.34/x
  3. Step 3: Cross multiply
    65,678.83x = 90,637.37 × 37,386.34
  4. Step 4: Simplify right side
    65,678.83x = 3,388,599,531.53
  5. Step 5: Solve for x
    x = 3,388,599,531.53/65,678.83
  6. Step 6: Final answer
    x = 51,593.48

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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.