Home / 65,435.19-90,356.70-63,319.27

Finding the Fourth Proportional to 65,435.19, 90,356.70 and 63,319.27

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Solution

The fourth proportional to 65,435.19, 90,356.70 and 63,319.27 is: 87,434.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,435.19 : 90,356.70 = 63,319.27 : x
  2. Step 2: Convert to fraction form
    65,435.19/90,356.70 = 63,319.27/x
  3. Step 3: Cross multiply
    65,435.19x = 90,356.70 × 63,319.27
  4. Step 4: Simplify right side
    65,435.19x = 5,721,320,108.41
  5. Step 5: Solve for x
    x = 5,721,320,108.41/65,435.19
  6. Step 6: Final answer
    x = 87,434.91

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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.