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Finding the Fourth Proportional to 72,358.76, 99,856.86 and 40,534.13

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Solution

The fourth proportional to 72,358.76, 99,856.86 and 40,534.13 is: 55,938.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,358.76 : 99,856.86 = 40,534.13 : x
  2. Step 2: Convert to fraction form
    72,358.76/99,856.86 = 40,534.13/x
  3. Step 3: Cross multiply
    72,358.76x = 99,856.86 × 40,534.13
  4. Step 4: Simplify right side
    72,358.76x = 4,047,610,944.63
  5. Step 5: Solve for x
    x = 4,047,610,944.63/72,358.76
  6. Step 6: Final answer
    x = 55,938.09

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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.