Home / 72,730.19-109,210.11-43,279.50

Finding the Fourth Proportional to 72,730.19, 109,210.11 and 43,279.50

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Solution

The fourth proportional to 72,730.19, 109,210.11 and 43,279.50 is: 64,987.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,730.19 : 109,210.11 = 43,279.50 : x
  2. Step 2: Convert to fraction form
    72,730.19/109,210.11 = 43,279.50/x
  3. Step 3: Cross multiply
    72,730.19x = 109,210.11 × 43,279.50
  4. Step 4: Simplify right side
    72,730.19x = 4,726,558,955.75
  5. Step 5: Solve for x
    x = 4,726,558,955.75/72,730.19
  6. Step 6: Final answer
    x = 64,987.58

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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.