Home / 78,738.12-118,048.86-47,566.08

Finding the Fourth Proportional to 78,738.12, 118,048.86 and 47,566.08

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Solution

The fourth proportional to 78,738.12, 118,048.86 and 47,566.08 is: 71,313.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,738.12 : 118,048.86 = 47,566.08 : x
  2. Step 2: Convert to fraction form
    78,738.12/118,048.86 = 47,566.08/x
  3. Step 3: Cross multiply
    78,738.12x = 118,048.86 × 47,566.08
  4. Step 4: Simplify right side
    78,738.12x = 5,615,121,518.67
  5. Step 5: Solve for x
    x = 5,615,121,518.67/78,738.12
  6. Step 6: Final answer
    x = 71,313.89

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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.