Home / 65,895.12-90,929-39,037.68

Finding the Fourth Proportional to 65,895.12, 90,929 and 39,037.68

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Solution

The fourth proportional to 65,895.12, 90,929 and 39,037.68 is: 53,868.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,895.12 : 90,929 = 39,037.68 : x
  2. Step 2: Convert to fraction form
    65,895.12/90,929 = 39,037.68/x
  3. Step 3: Cross multiply
    65,895.12x = 90,929 × 39,037.68
  4. Step 4: Simplify right side
    65,895.12x = 3,549,657,204.72
  5. Step 5: Solve for x
    x = 3,549,657,204.72/65,895.12
  6. Step 6: Final answer
    x = 53,868.29

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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.