Home / 85,505.51-117,995.19-47,779.76

Finding the Fourth Proportional to 85,505.51, 117,995.19 and 47,779.76

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Solution

The fourth proportional to 85,505.51, 117,995.19 and 47,779.76 is: 65,934.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,505.51 : 117,995.19 = 47,779.76 : x
  2. Step 2: Convert to fraction form
    85,505.51/117,995.19 = 47,779.76/x
  3. Step 3: Cross multiply
    85,505.51x = 117,995.19 × 47,779.76
  4. Step 4: Simplify right side
    85,505.51x = 5,637,781,859.35
  5. Step 5: Solve for x
    x = 5,637,781,859.35/85,505.51
  6. Step 6: Final answer
    x = 65,934.72

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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.