Home / 78,346.85-117,566.96-28,430.84

Finding the Fourth Proportional to 78,346.85, 117,566.96 and 28,430.84

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Solution

The fourth proportional to 78,346.85, 117,566.96 and 28,430.84 is: 42,663.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,346.85 : 117,566.96 = 28,430.84 : x
  2. Step 2: Convert to fraction form
    78,346.85/117,566.96 = 28,430.84/x
  3. Step 3: Cross multiply
    78,346.85x = 117,566.96 × 28,430.84
  4. Step 4: Simplify right side
    78,346.85x = 3,342,527,429.05
  5. Step 5: Solve for x
    x = 3,342,527,429.05/78,346.85
  6. Step 6: Final answer
    x = 42,663.20

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1.5x scale

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.