Home / 65,248.20-90,038.21-38,385.50

Finding the Fourth Proportional to 65,248.20, 90,038.21 and 38,385.50

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Solution

The fourth proportional to 65,248.20, 90,038.21 and 38,385.50 is: 52,969.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,248.20 : 90,038.21 = 38,385.50 : x
  2. Step 2: Convert to fraction form
    65,248.20/90,038.21 = 38,385.50/x
  3. Step 3: Cross multiply
    65,248.20x = 90,038.21 × 38,385.50
  4. Step 4: Simplify right side
    65,248.20x = 3,456,161,067.84
  5. Step 5: Solve for x
    x = 3,456,161,067.84/65,248.20
  6. Step 6: Final answer
    x = 52,969.45

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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.