Home / 76,734.80-105,886.44-42,742.08

Finding the Fourth Proportional to 76,734.80, 105,886.44 and 42,742.08

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Solution

The fourth proportional to 76,734.80, 105,886.44 and 42,742.08 is: 58,979.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,734.80 : 105,886.44 = 42,742.08 : x
  2. Step 2: Convert to fraction form
    76,734.80/105,886.44 = 42,742.08/x
  3. Step 3: Cross multiply
    76,734.80x = 105,886.44 × 42,742.08
  4. Step 4: Simplify right side
    76,734.80x = 4,525,806,689.40
  5. Step 5: Solve for x
    x = 4,525,806,689.40/76,734.80
  6. Step 6: Final answer
    x = 58,979.85

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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.