Home / 78,842.99-118,280.07-28,923.53

Finding the Fourth Proportional to 78,842.99, 118,280.07 and 28,923.53

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Solution

The fourth proportional to 78,842.99, 118,280.07 and 28,923.53 is: 43,391.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,842.99 : 118,280.07 = 28,923.53 : x
  2. Step 2: Convert to fraction form
    78,842.99/118,280.07 = 28,923.53/x
  3. Step 3: Cross multiply
    78,842.99x = 118,280.07 × 28,923.53
  4. Step 4: Simplify right side
    78,842.99x = 3,421,076,561.65
  5. Step 5: Solve for x
    x = 3,421,076,561.65/78,842.99
  6. Step 6: Final answer
    x = 43,391.01

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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.