Home / 66,870.05-100,281.12-31,325.28

Finding the Fourth Proportional to 66,870.05, 100,281.12 and 31,325.28

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Solution

The fourth proportional to 66,870.05, 100,281.12 and 31,325.28 is: 46,976.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,870.05 : 100,281.12 = 31,325.28 : x
  2. Step 2: Convert to fraction form
    66,870.05/100,281.12 = 31,325.28/x
  3. Step 3: Cross multiply
    66,870.05x = 100,281.12 × 31,325.28
  4. Step 4: Simplify right side
    66,870.05x = 3,141,334,162.71
  5. Step 5: Solve for x
    x = 3,141,334,162.71/66,870.05
  6. Step 6: Final answer
    x = 46,976.70

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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.