Home / 85,537.12-118,038.64-47,811.28

Finding the Fourth Proportional to 85,537.12, 118,038.64 and 47,811.28

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Solution

The fourth proportional to 85,537.12, 118,038.64 and 47,811.28 is: 65,978.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,537.12 : 118,038.64 = 47,811.28 : x
  2. Step 2: Convert to fraction form
    85,537.12/118,038.64 = 47,811.28/x
  3. Step 3: Cross multiply
    85,537.12x = 118,038.64 × 47,811.28
  4. Step 4: Simplify right side
    85,537.12x = 5,643,578,467.86
  5. Step 5: Solve for x
    x = 5,643,578,467.86/85,537.12
  6. Step 6: Final answer
    x = 65,978.12

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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.