Home / 72,670.08-100,287.69-40,838.91

Finding the Fourth Proportional to 72,670.08, 100,287.69 and 40,838.91

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Solution

The fourth proportional to 72,670.08, 100,287.69 and 40,838.91 is: 56,359.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,670.08 : 100,287.69 = 40,838.91 : x
  2. Step 2: Convert to fraction form
    72,670.08/100,287.69 = 40,838.91/x
  3. Step 3: Cross multiply
    72,670.08x = 100,287.69 × 40,838.91
  4. Step 4: Simplify right side
    72,670.08x = 4,095,639,946.02
  5. Step 5: Solve for x
    x = 4,095,639,946.02/72,670.08
  6. Step 6: Final answer
    x = 56,359.37

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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.