Home / 76,645.16-105,769.35-42,652.80

Finding the Fourth Proportional to 76,645.16, 105,769.35 and 42,652.80

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Solution

The fourth proportional to 76,645.16, 105,769.35 and 42,652.80 is: 58,860.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,645.16 : 105,769.35 = 42,652.80 : x
  2. Step 2: Convert to fraction form
    76,645.16/105,769.35 = 42,652.80/x
  3. Step 3: Cross multiply
    76,645.16x = 105,769.35 × 42,652.80
  4. Step 4: Simplify right side
    76,645.16x = 4,511,358,931.68
  5. Step 5: Solve for x
    x = 4,511,358,931.68/76,645.16
  6. Step 6: Final answer
    x = 58,860.32

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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.