Home / 75,259.08-112,791-56,390.40

Finding the Fourth Proportional to 75,259.08, 112,791 and 56,390.40

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Solution

The fourth proportional to 75,259.08, 112,791 and 56,390.40 is: 84,512.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,259.08 : 112,791 = 56,390.40 : x
  2. Step 2: Convert to fraction form
    75,259.08/112,791 = 56,390.40/x
  3. Step 3: Cross multiply
    75,259.08x = 112,791 × 56,390.40
  4. Step 4: Simplify right side
    75,259.08x = 6,360,329,606.40
  5. Step 5: Solve for x
    x = 6,360,329,606.40/75,259.08
  6. Step 6: Final answer
    x = 84,512.45

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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.