Home / 51,051.31-70,457.09-30,915.19

Finding the Fourth Proportional to 51,051.31, 70,457.09 and 30,915.19

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Solution

The fourth proportional to 51,051.31, 70,457.09 and 30,915.19 is: 42,666.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,051.31 : 70,457.09 = 30,915.19 : x
  2. Step 2: Convert to fraction form
    51,051.31/70,457.09 = 30,915.19/x
  3. Step 3: Cross multiply
    51,051.31x = 70,457.09 × 30,915.19
  4. Step 4: Simplify right side
    51,051.31x = 2,178,194,257.69
  5. Step 5: Solve for x
    x = 2,178,194,257.69/51,051.31
  6. Step 6: Final answer
    x = 42,666.77

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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.