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Finding the Fourth Proportional to 60,356.40, 90,501.56 and 20,910.16

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Solution

The fourth proportional to 60,356.40, 90,501.56 and 20,910.16 is: 31,353.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,356.40 : 90,501.56 = 20,910.16 : x
  2. Step 2: Convert to fraction form
    60,356.40/90,501.56 = 20,910.16/x
  3. Step 3: Cross multiply
    60,356.40x = 90,501.56 × 20,910.16
  4. Step 4: Simplify right side
    60,356.40x = 1,892,402,099.85
  5. Step 5: Solve for x
    x = 1,892,402,099.85/60,356.40
  6. Step 6: Final answer
    x = 31,353.79

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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.