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Finding the Fourth Proportional to 101,021.88, 139,440.78 and 58,590.84

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Solution

The fourth proportional to 101,021.88, 139,440.78 and 58,590.84 is: 80,873.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,021.88 : 139,440.78 = 58,590.84 : x
  2. Step 2: Convert to fraction form
    101,021.88/139,440.78 = 58,590.84/x
  3. Step 3: Cross multiply
    101,021.88x = 139,440.78 × 58,590.84
  4. Step 4: Simplify right side
    101,021.88x = 8,169,952,430.46
  5. Step 5: Solve for x
    x = 8,169,952,430.46/101,021.88
  6. Step 6: Final answer
    x = 80,873.10

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1.5x scale

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.