Home / 61,756.20-85,239.84-42,639.12

Finding the Fourth Proportional to 61,756.20, 85,239.84 and 42,639.12

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Solution

The fourth proportional to 61,756.20, 85,239.84 and 42,639.12 is: 58,853.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,756.20 : 85,239.84 = 42,639.12 : x
  2. Step 2: Convert to fraction form
    61,756.20/85,239.84 = 42,639.12/x
  3. Step 3: Cross multiply
    61,756.20x = 85,239.84 × 42,639.12
  4. Step 4: Simplify right side
    61,756.20x = 3,634,551,766.54
  5. Step 5: Solve for x
    x = 3,634,551,766.54/61,756.20
  6. Step 6: Final answer
    x = 58,853.23

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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.