Home / 89,130-122,999.40-49,386

Finding the Fourth Proportional to 89,130, 122,999.40 and 49,386

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Solution

The fourth proportional to 89,130, 122,999.40 and 49,386 is: 68,152.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,130 : 122,999.40 = 49,386 : x
  2. Step 2: Convert to fraction form
    89,130/122,999.40 = 49,386/x
  3. Step 3: Cross multiply
    89,130x = 122,999.40 × 49,386
  4. Step 4: Simplify right side
    89,130x = 6,074,448,368.40
  5. Step 5: Solve for x
    x = 6,074,448,368.40/89,130
  6. Step 6: Final answer
    x = 68,152.68

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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.