Home / 77,001.20-115,501.80-72,335.60

Finding the Fourth Proportional to 77,001.20, 115,501.80 and 72,335.60

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Solution

The fourth proportional to 77,001.20, 115,501.80 and 72,335.60 is: 108,503.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,001.20 : 115,501.80 = 72,335.60 : x
  2. Step 2: Convert to fraction form
    77,001.20/115,501.80 = 72,335.60/x
  3. Step 3: Cross multiply
    77,001.20x = 115,501.80 × 72,335.60
  4. Step 4: Simplify right side
    77,001.20x = 8,354,892,004.08
  5. Step 5: Solve for x
    x = 8,354,892,004.08/77,001.20
  6. Step 6: Final answer
    x = 108,503.40

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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.