Home / 81,109.79-111,929.23-45,298.75

Finding the Fourth Proportional to 81,109.79, 111,929.23 and 45,298.75

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Solution

The fourth proportional to 81,109.79, 111,929.23 and 45,298.75 is: 62,511.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,109.79 : 111,929.23 = 45,298.75 : x
  2. Step 2: Convert to fraction form
    81,109.79/111,929.23 = 45,298.75/x
  3. Step 3: Cross multiply
    81,109.79x = 111,929.23 × 45,298.75
  4. Step 4: Simplify right side
    81,109.79x = 5,070,254,207.46
  5. Step 5: Solve for x
    x = 5,070,254,207.46/81,109.79
  6. Step 6: Final answer
    x = 62,511.00

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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.