Home / 72,579.84-100,156.80-42,766.08

Finding the Fourth Proportional to 72,579.84, 100,156.80 and 42,766.08

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Solution

The fourth proportional to 72,579.84, 100,156.80 and 42,766.08 is: 59,015.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,579.84 : 100,156.80 = 42,766.08 : x
  2. Step 2: Convert to fraction form
    72,579.84/100,156.80 = 42,766.08/x
  3. Step 3: Cross multiply
    72,579.84x = 100,156.80 × 42,766.08
  4. Step 4: Simplify right side
    72,579.84x = 4,283,313,721.34
  5. Step 5: Solve for x
    x = 4,283,313,721.34/72,579.84
  6. Step 6: Final answer
    x = 59,015.20

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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.