Home / 42,948.77-64,443.47-20,749.68

Finding the Fourth Proportional to 42,948.77, 64,443.47 and 20,749.68

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Solution

The fourth proportional to 42,948.77, 64,443.47 and 20,749.68 is: 31,134.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,948.77 : 64,443.47 = 20,749.68 : x
  2. Step 2: Convert to fraction form
    42,948.77/64,443.47 = 20,749.68/x
  3. Step 3: Cross multiply
    42,948.77x = 64,443.47 × 20,749.68
  4. Step 4: Simplify right side
    42,948.77x = 1,337,181,276.84
  5. Step 5: Solve for x
    x = 1,337,181,276.84/42,948.77
  6. Step 6: Final answer
    x = 31,134.34

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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.