Home / 56,299.84-77,695.04-31,149.60

Finding the Fourth Proportional to 56,299.84, 77,695.04 and 31,149.60

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Solution

The fourth proportional to 56,299.84, 77,695.04 and 31,149.60 is: 42,987.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,299.84 : 77,695.04 = 31,149.60 : x
  2. Step 2: Convert to fraction form
    56,299.84/77,695.04 = 31,149.60/x
  3. Step 3: Cross multiply
    56,299.84x = 77,695.04 × 31,149.60
  4. Step 4: Simplify right side
    56,299.84x = 2,420,169,417.98
  5. Step 5: Solve for x
    x = 2,420,169,417.98/56,299.84
  6. Step 6: Final answer
    x = 42,987.15

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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.