Home / 90,533.12-124,878.87-58,309.50

Finding the Fourth Proportional to 90,533.12, 124,878.87 and 58,309.50

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Solution

The fourth proportional to 90,533.12, 124,878.87 and 58,309.50 is: 80,430.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,533.12 : 124,878.87 = 58,309.50 : x
  2. Step 2: Convert to fraction form
    90,533.12/124,878.87 = 58,309.50/x
  3. Step 3: Cross multiply
    90,533.12x = 124,878.87 × 58,309.50
  4. Step 4: Simplify right side
    90,533.12x = 7,281,624,470.27
  5. Step 5: Solve for x
    x = 7,281,624,470.27/90,533.12
  6. Step 6: Final answer
    x = 80,430.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.