Home / 51,051.81-70,457.78-30,915.69

Finding the Fourth Proportional to 51,051.81, 70,457.78 and 30,915.69

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Solution

The fourth proportional to 51,051.81, 70,457.78 and 30,915.69 is: 42,667.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,051.81 : 70,457.78 = 30,915.69 : x
  2. Step 2: Convert to fraction form
    51,051.81/70,457.78 = 30,915.69/x
  3. Step 3: Cross multiply
    51,051.81x = 70,457.78 × 30,915.69
  4. Step 4: Simplify right side
    51,051.81x = 2,178,250,729.99
  5. Step 5: Solve for x
    x = 2,178,250,729.99/51,051.81
  6. Step 6: Final answer
    x = 42,667.45

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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.