Home / 40,878.30-61,317.45-30,510.30

Finding the Fourth Proportional to 40,878.30, 61,317.45 and 30,510.30

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Solution

The fourth proportional to 40,878.30, 61,317.45 and 30,510.30 is: 45,765.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,878.30 : 61,317.45 = 30,510.30 : x
  2. Step 2: Convert to fraction form
    40,878.30/61,317.45 = 30,510.30/x
  3. Step 3: Cross multiply
    40,878.30x = 61,317.45 × 30,510.30
  4. Step 4: Simplify right side
    40,878.30x = 1,870,813,794.74
  5. Step 5: Solve for x
    x = 1,870,813,794.74/40,878.30
  6. Step 6: Final answer
    x = 45,765.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.