Home / 76,865.91-106,075.12-42,873.52

Finding the Fourth Proportional to 76,865.91, 106,075.12 and 42,873.52

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Solution

The fourth proportional to 76,865.91, 106,075.12 and 42,873.52 is: 59,165.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,865.91 : 106,075.12 = 42,873.52 : x
  2. Step 2: Convert to fraction form
    76,865.91/106,075.12 = 42,873.52/x
  3. Step 3: Cross multiply
    76,865.91x = 106,075.12 × 42,873.52
  4. Step 4: Simplify right side
    76,865.91x = 4,547,813,819.05
  5. Step 5: Solve for x
    x = 4,547,813,819.05/76,865.91
  6. Step 6: Final answer
    x = 59,165.55

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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.