Home / 85,898.04-128,921.46-59,621.28

Finding the Fourth Proportional to 85,898.04, 128,921.46 and 59,621.28

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Solution

The fourth proportional to 85,898.04, 128,921.46 and 59,621.28 is: 89,483.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,898.04 : 128,921.46 = 59,621.28 : x
  2. Step 2: Convert to fraction form
    85,898.04/128,921.46 = 59,621.28/x
  3. Step 3: Cross multiply
    85,898.04x = 128,921.46 × 59,621.28
  4. Step 4: Simplify right side
    85,898.04x = 7,686,462,464.67
  5. Step 5: Solve for x
    x = 7,686,462,464.67/85,898.04
  6. Step 6: Final answer
    x = 89,483.56

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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.