Home / 51,430.05-70,980.04-28,770.30

Finding the Fourth Proportional to 51,430.05, 70,980.04 and 28,770.30

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Solution

The fourth proportional to 51,430.05, 70,980.04 and 28,770.30 is: 39,706.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,430.05 : 70,980.04 = 28,770.30 : x
  2. Step 2: Convert to fraction form
    51,430.05/70,980.04 = 28,770.30/x
  3. Step 3: Cross multiply
    51,430.05x = 70,980.04 × 28,770.30
  4. Step 4: Simplify right side
    51,430.05x = 2,042,117,044.81
  5. Step 5: Solve for x
    x = 2,042,117,044.81/51,430.05
  6. Step 6: Final answer
    x = 39,706.69

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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.