Home / 66,909.77-92,335.37-38,615.45

Finding the Fourth Proportional to 66,909.77, 92,335.37 and 38,615.45

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Solution

The fourth proportional to 66,909.77, 92,335.37 and 38,615.45 is: 53,289.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,909.77 : 92,335.37 = 38,615.45 : x
  2. Step 2: Convert to fraction form
    66,909.77/92,335.37 = 38,615.45/x
  3. Step 3: Cross multiply
    66,909.77x = 92,335.37 × 38,615.45
  4. Step 4: Simplify right side
    66,909.77x = 3,565,571,901.23
  5. Step 5: Solve for x
    x = 3,565,571,901.23/66,909.77
  6. Step 6: Final answer
    x = 53,289.26

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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.