Home / 51,430.04-70,815.74-45,020.76

Finding the Fourth Proportional to 51,430.04, 70,815.74 and 45,020.76

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Solution

The fourth proportional to 51,430.04, 70,815.74 and 45,020.76 is: 61,990.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,430.04 : 70,815.74 = 45,020.76 : x
  2. Step 2: Convert to fraction form
    51,430.04/70,815.74 = 45,020.76/x
  3. Step 3: Cross multiply
    51,430.04x = 70,815.74 × 45,020.76
  4. Step 4: Simplify right side
    51,430.04x = 3,188,178,722.30
  5. Step 5: Solve for x
    x = 3,188,178,722.30/51,430.04
  6. Step 6: Final answer
    x = 61,990.60

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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.