Home / 81,012.28-111,779.05-47,001.07

Finding the Fourth Proportional to 81,012.28, 111,779.05 and 47,001.07

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Solution

The fourth proportional to 81,012.28, 111,779.05 and 47,001.07 is: 64,851.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,012.28 : 111,779.05 = 47,001.07 : x
  2. Step 2: Convert to fraction form
    81,012.28/111,779.05 = 47,001.07/x
  3. Step 3: Cross multiply
    81,012.28x = 111,779.05 × 47,001.07
  4. Step 4: Simplify right side
    81,012.28x = 5,253,734,159.68
  5. Step 5: Solve for x
    x = 5,253,734,159.68/81,012.28
  6. Step 6: Final answer
    x = 64,851.08

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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.