Home / 42,809.76-64,214.64-28,111.68

Finding the Fourth Proportional to 42,809.76, 64,214.64 and 28,111.68

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Solution

The fourth proportional to 42,809.76, 64,214.64 and 28,111.68 is: 42,167.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,809.76 : 64,214.64 = 28,111.68 : x
  2. Step 2: Convert to fraction form
    42,809.76/64,214.64 = 28,111.68/x
  3. Step 3: Cross multiply
    42,809.76x = 64,214.64 × 28,111.68
  4. Step 4: Simplify right side
    42,809.76x = 1,805,181,411.00
  5. Step 5: Solve for x
    x = 1,805,181,411.00/42,809.76
  6. Step 6: Final answer
    x = 42,167.52

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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.