Home / 51,611.40-77,344.20-31,831.20

Finding the Fourth Proportional to 51,611.40, 77,344.20 and 31,831.20

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Solution

The fourth proportional to 51,611.40, 77,344.20 and 31,831.20 is: 47,701.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,611.40 : 77,344.20 = 31,831.20 : x
  2. Step 2: Convert to fraction form
    51,611.40/77,344.20 = 31,831.20/x
  3. Step 3: Cross multiply
    51,611.40x = 77,344.20 × 31,831.20
  4. Step 4: Simplify right side
    51,611.40x = 2,461,958,699.04
  5. Step 5: Solve for x
    x = 2,461,958,699.04/51,611.40
  6. Step 6: Final answer
    x = 47,701.84

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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.