Home / 85,509.12-118,002.20-47,783.36

Finding the Fourth Proportional to 85,509.12, 118,002.20 and 47,783.36

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Solution

The fourth proportional to 85,509.12, 118,002.20 and 47,783.36 is: 65,940.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,509.12 : 118,002.20 = 47,783.36 : x
  2. Step 2: Convert to fraction form
    85,509.12/118,002.20 = 47,783.36/x
  3. Step 3: Cross multiply
    85,509.12x = 118,002.20 × 47,783.36
  4. Step 4: Simplify right side
    85,509.12x = 5,638,541,603.39
  5. Step 5: Solve for x
    x = 5,638,541,603.39/85,509.12
  6. Step 6: Final answer
    x = 65,940.82

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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.