Home / 51,054.72-70,457.16-30,915.36

Finding the Fourth Proportional to 51,054.72, 70,457.16 and 30,915.36

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Solution

The fourth proportional to 51,054.72, 70,457.16 and 30,915.36 is: 42,664.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,054.72 : 70,457.16 = 30,915.36 : x
  2. Step 2: Convert to fraction form
    51,054.72/70,457.16 = 30,915.36/x
  3. Step 3: Cross multiply
    51,054.72x = 70,457.16 × 30,915.36
  4. Step 4: Simplify right side
    51,054.72x = 2,178,208,465.98
  5. Step 5: Solve for x
    x = 2,178,208,465.98/51,054.72
  6. Step 6: Final answer
    x = 42,664.19

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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.