Home / 42,731.28-64,041.15-30,924.81

Finding the Fourth Proportional to 42,731.28, 64,041.15 and 30,924.81

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Solution

The fourth proportional to 42,731.28, 64,041.15 and 30,924.81 is: 46,346.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,731.28 : 64,041.15 = 30,924.81 : x
  2. Step 2: Convert to fraction form
    42,731.28/64,041.15 = 30,924.81/x
  3. Step 3: Cross multiply
    42,731.28x = 64,041.15 × 30,924.81
  4. Step 4: Simplify right side
    42,731.28x = 1,980,460,395.93
  5. Step 5: Solve for x
    x = 1,980,460,395.93/42,731.28
  6. Step 6: Final answer
    x = 46,346.85

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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.