Home / 70,051.09-105,148.11-51,275.35

Finding the Fourth Proportional to 70,051.09, 105,148.11 and 51,275.35

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Solution

The fourth proportional to 70,051.09, 105,148.11 and 51,275.35 is: 76,965.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,051.09 : 105,148.11 = 51,275.35 : x
  2. Step 2: Convert to fraction form
    70,051.09/105,148.11 = 51,275.35/x
  3. Step 3: Cross multiply
    70,051.09x = 105,148.11 × 51,275.35
  4. Step 4: Simplify right side
    70,051.09x = 5,391,506,689.43
  5. Step 5: Solve for x
    x = 5,391,506,689.43/70,051.09
  6. Step 6: Final answer
    x = 76,965.35

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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.